20110210002021 has 4 divisors (see below), whose sum is σ = 26813613336032. Its totient is φ = 13406806668012.

The previous prime is 20110210001989. The next prime is 20110210002073. The reversal of 20110210002021 is 12020001201102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20110210002021 - 2⁵ = 20110210001989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20110210001988 and 20110210002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110210002721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3351701667001 + ... + 3351701667006.

It is an arithmetic number, because the mean of its divisors is an integer number (6703403334008).

Almost surely, 2^{20110210002021} is an apocalyptic number.

It is an amenable number.

20110210002021 is a deficient number, since it is larger than the sum of its proper divisors (6703403334011).

20110210002021 is an equidigital number, since it uses as much as digits as its factorization.

20110210002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703403334010.

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

Adding to 20110210002021 its reverse (12020001201102), we get a palindrome (32130211203123).

The spelling of 20110210002021 in words is "twenty trillion, one hundred ten billion, two hundred ten million, two thousand, twenty-one".