10020111210021 has 32 divisors (see below), whose sum is σ = 14801274888192. Its totient is φ = 5979073095360.

The previous prime is 10020111209993. The next prime is 10020111210077. The reversal of 10020111210021 is 12001211102001.

It is not a de Polignac number, because 10020111210021 - 2⁷ = 10020111209893 is a prime.

It is a super-2 number, since 2×10020111210021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10020111209979 and 10020111210006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020111218021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7932085 + ... + 9108138.

It is an arithmetic number, because the mean of its divisors is an integer number (462539840256).

Almost surely, 2^{10020111210021} is an apocalyptic number.

10020111210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10020111210021 is a deficient number, since it is larger than the sum of its proper divisors (4781163678171).

10020111210021 is a wasteful number, since it uses less digits than its factorization.

10020111210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17040513.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10020111210021 its reverse (12001211102001), we get a palindrome (22021322312022).

The spelling of 10020111210021 in words is "ten trillion, twenty billion, one hundred eleven million, two hundred ten thousand, twenty-one".