201210122120121 has 48 divisors (see below), whose sum is σ = 292402781798400. Its totient is φ = 133327476817920.

The previous prime is 201210122120107. The next prime is 201210122120123. The reversal of 201210122120121 is 121021221012102.

201210122120121 is a `hidden beast` number, since 201 + 2 + 101 + 221 + 20 + 121 = 666.

It is not a de Polignac number, because 201210122120121 - 2³⁸ = 200935244213177 is a prime.

It is a super-2 number, since 2×201210122120121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201210122120094 and 201210122120103.

It is not an unprimeable number, because it can be changed into a prime (201210122120123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12476591560 + ... + 12476607686.

It is an arithmetic number, because the mean of its divisors is an integer number (6091724620800).

Almost surely, 2^{201210122120121} is an apocalyptic number.

It is an amenable number.

201210122120121 is a deficient number, since it is larger than the sum of its proper divisors (91192659678279).

201210122120121 is a wasteful number, since it uses less digits than its factorization.

201210122120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28246 (or 28243 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201210122120121 its reverse (121021221012102), we get a palindrome (322231343132223).

The spelling of 201210122120121 in words is "two hundred one trillion, two hundred ten billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".