20210110102021 has 16 divisors (see below), whose sum is σ = 23519306259328. Its totient is φ = 17007473188800.

The previous prime is 20210110102001. The next prime is 20210110102031. The reversal of 20210110102021 is 12020101101202.

It is a cyclic number.

It is not a de Polignac number, because 20210110102021 - 2⁷ = 20210110101893 is a prime.

It is a super-2 number, since 2×20210110102021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210110101992 and 20210110102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210110102001) 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, 43512495 + ... + 43974508.

It is an arithmetic number, because the mean of its divisors is an integer number (1469956641208).

Almost surely, 2^{20210110102021} is an apocalyptic number.

It is an amenable number.

20210110102021 is a deficient number, since it is larger than the sum of its proper divisors (3309196157307).

20210110102021 is an equidigital number, since it uses as much as digits as its factorization.

20210110102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87487612.

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

Adding to 20210110102021 its reverse (12020101101202), we get a palindrome (32230211203223).

The spelling of 20210110102021 in words is "twenty trillion, two hundred ten billion, one hundred ten million, one hundred two thousand, twenty-one".