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201100012121 = 864232326927
BaseRepresentation
bin1011101101001001111…
…1101010101001011001
3201020002000011002110002
42323102133222221121
511243323100341441
6232214543102345
720346305620301
oct2732237525131
9636060132402
10201100012121
1178316794628
1232b83ba19b5
1315c6b1a5518
149a3a224601
15536ed0db9b
hex2ed27eaa59

201100012121 has 4 divisors (see below), whose sum is σ = 201102425472. Its totient is φ = 201097598772.

The previous prime is 201100012111. The next prime is 201100012123. The reversal of 201100012121 is 121210001102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201100012121 - 210 = 201100011097 is a prime.

It is a super-4 number, since 4×2011000121214 (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201100012123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077041 + ... + 1249886.

It is an arithmetic number, because the mean of its divisors is an integer number (50275606368).

Almost surely, 2201100012121 is an apocalyptic number.

It is an amenable number.

201100012121 is a deficient number, since it is larger than the sum of its proper divisors (2413351).

201100012121 is an equidigital number, since it uses as much as digits as its factorization.

201100012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413350.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201100012121 its reverse (121210001102), we get a palindrome (322310013223).

The spelling of 201100012121 in words is "two hundred one billion, one hundred million, twelve thousand, one hundred twenty-one".

Divisors: 1 86423 2326927 201100012121