2120002011021 has 16 divisors (see below), whose sum is σ = 2855507397120. Its totient is φ = 1398923995200.

The previous prime is 2120002010983. The next prime is 2120002011137. The reversal of 2120002011021 is 1201102000212.

It is not a de Polignac number, because 2120002011021 - 2⁶ = 2120002010957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120002010988 and 2120002011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120002011521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23710 + ... + 2059263.

It is an arithmetic number, because the mean of its divisors is an integer number (178469212320).

Almost surely, 2^{2120002011021} is an apocalyptic number.

It is an amenable number.

2120002011021 is a deficient number, since it is larger than the sum of its proper divisors (735505386099).

2120002011021 is a wasteful number, since it uses less digits than its factorization.

2120002011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086436.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2120002011021 its reverse (1201102000212), we get a palindrome (3321104011233).

The spelling of 2120002011021 in words is "two trillion, one hundred twenty billion, two million, eleven thousand, twenty-one".