120211021011021 has 16 divisors (see below), whose sum is σ = 160356184544640. Its totient is φ = 80103271080960.

The previous prime is 120211021011017. The next prime is 120211021011023. The reversal of 120211021011021 is 120110120112021.

It is a happy number.

It is not a de Polignac number, because 120211021011021 - 2² = 120211021011017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211021011023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260576800 + ... + 261037718.

It is an arithmetic number, because the mean of its divisors is an integer number (10022261534040).

Almost surely, 2^{120211021011021} is an apocalyptic number.

It is an amenable number.

120211021011021 is a deficient number, since it is larger than the sum of its proper divisors (40145163533619).

120211021011021 is a wasteful number, since it uses less digits than its factorization.

120211021011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501316.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120211021011021 its reverse (120110120112021), we get a palindrome (240321141123042).

The spelling of 120211021011021 in words is "one hundred twenty trillion, two hundred eleven billion, twenty-one million, eleven thousand, twenty-one".