20100110122021 has 4 divisors (see below), whose sum is σ = 20100787584544. Its totient is φ = 20099432659500.

The previous prime is 20100110122019. The next prime is 20100110122033. The reversal of 20100110122021 is 12022101100102.

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 a cyclic number.

It is not a de Polignac number, because 20100110122021 - 2¹ = 20100110122019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100110121992 and 20100110122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100110122091) 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, 338686755 + ... + 338746096.

It is an arithmetic number, because the mean of its divisors is an integer number (5025196896136).

Almost surely, 2^{20100110122021} is an apocalyptic number.

It is an amenable number.

20100110122021 is a deficient number, since it is larger than the sum of its proper divisors (677462523).

20100110122021 is an equidigital number, since it uses as much as digits as its factorization.

20100110122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677462522.

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

Adding to 20100110122021 its reverse (12022101100102), we get a palindrome (32122211222123).

The spelling of 20100110122021 in words is "twenty trillion, one hundred billion, one hundred ten million, one hundred twenty-two thousand, twenty-one".