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122010021210221 = 1171136471763481
BaseRepresentation
bin11011101111011110101011…
…111110010010100001101101
3121000000001012011022002222122
4123233132223332102201231
5111443003010412211341
61111254344023122325
734461635031443444
oct3357365376224155
9530001164262878
10122010021210221
11359701831a6611
12118264392a33a5
135310659b96721
14221b460803d5b
15e18b622d094b
hex6ef7abf9286d

122010021210221 has 8 divisors (see below), whose sum is σ = 122115268970688. Its totient is φ = 121904775252000.

The previous prime is 122010021210199. The next prime is 122010021210257. The reversal of 122010021210221 is 122012120010221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122010021210221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122010021210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010021210421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159425801 + ... + 160189281.

It is an arithmetic number, because the mean of its divisors is an integer number (15264408621336).

Almost surely, 2122010021210221 is an apocalyptic number.

It is an amenable number.

122010021210221 is a deficient number, since it is larger than the sum of its proper divisors (105247760467).

122010021210221 is a wasteful number, since it uses less digits than its factorization.

122010021210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901123.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122010021210221 its reverse (122012120010221), we get a palindrome (244022141220442).

The spelling of 122010021210221 in words is "one hundred twenty-two trillion, ten billion, twenty-one million, two hundred ten thousand, two hundred twenty-one".

Divisors: 1 1171 136471 763481 159807541 894036251 104193015551 122010021210221