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122011121010020 = 22511554596004591
BaseRepresentation
bin11011101111011111101101…
…100001101100010101100100
3121000000011000210202201200112
4123233133231201230111210
5111443012233434310040
61111255045111432152
734462004214544034
oct3357375541542544
9530004023681615
10122011121010020
1135970697a94470
12118266a5685658
1353107a39a7238
14221b5268cd8c4
15e18bc8b27365
hex6ef7ed86c564

122011121010020 has 24 divisors (see below), whose sum is σ = 279516386314368. Its totient is φ = 44367680367200.

The previous prime is 122011121010001. The next prime is 122011121010059. The reversal of 122011121010020 is 20010121110221.

It is a junction number, because it is equal to n+sod(n) for n = 122011121009977 and 122011121010004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277298002076 + ... + 277298002515.

It is an arithmetic number, because the mean of its divisors is an integer number (11646516096432).

Almost surely, 2122011121010020 is an apocalyptic number.

122011121010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122011121010020 is an abundant number, since it is smaller than the sum of its proper divisors (157505265304348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122011121010020 is a wasteful number, since it uses less digits than its factorization.

122011121010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554596004611 (or 554596004609 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122011121010020 its reverse (20010121110221), we get a palindrome (142021242120241).

The spelling of 122011121010020 in words is "one hundred twenty-two trillion, eleven billion, one hundred twenty-one million, ten thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 554596004591 1109192009182 2218384018364 2772980022955 5545960045910 6100556050501 11091920091820 12201112101002 24402224202004 30502780252505 61005560505010 122011121010020