120211021020021 has 48 divisors (see below), whose sum is σ = 169447814910144. Its totient is φ = 75794224209408.

The previous prime is 120211021020017. The next prime is 120211021020031. The reversal of 120211021020021 is 120020120112021.

It is not a de Polignac number, because 120211021020021 - 2² = 120211021020017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211021020031) 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, 1611435295 + ... + 1611509891.

It is an arithmetic number, because the mean of its divisors is an integer number (3530162810628).

Almost surely, 2^{120211021020021} is an apocalyptic number.

It is an amenable number.

120211021020021 is a deficient number, since it is larger than the sum of its proper divisors (49236793890123).

120211021020021 is a wasteful number, since it uses less digits than its factorization.

120211021020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77138 (or 77119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120211021020021 its reverse (120020120112021), we get a palindrome (240231141132042).

The spelling of 120211021020021 in words is "one hundred twenty trillion, two hundred eleven billion, twenty-one million, twenty thousand, twenty-one".