2100210112021 has 32 divisors (see below), whose sum is σ = 2482060492800. Its totient is φ = 1739023827840.

The previous prime is 2100210112009. The next prime is 2100210112027. The reversal of 2100210112021 is 1202110120012.

It is a cyclic number.

It is not a de Polignac number, because 2100210112021 - 2²¹ = 2100208014869 is a prime.

It is a super-2 number, since 2×2100210112021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100210111992 and 2100210112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100210112027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355783956 + ... + 355789858.

It is an arithmetic number, because the mean of its divisors is an integer number (77564390400).

Almost surely, 2^{2100210112021} is an apocalyptic number.

It is an amenable number.

2100210112021 is a deficient number, since it is larger than the sum of its proper divisors (381850380779).

2100210112021 is a wasteful number, since it uses less digits than its factorization.

2100210112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8569.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100210112021 its reverse (1202110120012), we get a palindrome (3302320232033).

The spelling of 2100210112021 in words is "two trillion, one hundred billion, two hundred ten million, one hundred twelve thousand, twenty-one".