2120221011021 has 16 divisors (see below), whose sum is σ = 2862053236800. Its totient is φ = 1395971710848.

The previous prime is 2120221010987. The next prime is 2120221011023. The reversal of 2120221011021 is 1201101220212.

It is not a de Polignac number, because 2120221011021 - 2¹⁴ = 2120220994637 is a prime.

It is a super-2 number, since 2×2120221011021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120221011023) 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, 4392826 + ... + 4851531.

It is an arithmetic number, because the mean of its divisors is an integer number (178878327300).

Almost surely, 2^{2120221011021} is an apocalyptic number.

It is an amenable number.

2120221011021 is a deficient number, since it is larger than the sum of its proper divisors (741832225779).

2120221011021 is an equidigital number, since it uses as much as digits as its factorization.

2120221011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9245308.

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

Adding to 2120221011021 its reverse (1201101220212), we get a palindrome (3321322231233).

The spelling of 2120221011021 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, eleven thousand, twenty-one".