20110222222021 has 4 divisors (see below), whose sum is σ = 20113132114944. Its totient is φ = 20107312329100.

The previous prime is 20110222221977. The next prime is 20110222222031. The reversal of 20110222222021 is 12022222201102.

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 20110222222021 - 2³⁷ = 19972783268549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20110222222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110222222031) 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, 1454936095 + ... + 1454949916.

It is an arithmetic number, because the mean of its divisors is an integer number (5028283028736).

Almost surely, 2^{20110222222021} is an apocalyptic number.

It is an amenable number.

20110222222021 is a deficient number, since it is larger than the sum of its proper divisors (2909892923).

20110222222021 is an equidigital number, since it uses as much as digits as its factorization.

20110222222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909892922.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20110222222021 its reverse (12022222201102), we get a palindrome (32132444423123).

The spelling of 20110222222021 in words is "twenty trillion, one hundred ten billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty-one".