21022210023 has 8 divisors (see below), whose sum is σ = 28344553200. Its totient is φ = 13857336768.

The previous prime is 21022210021. The next prime is 21022210031. The reversal of 21022210023 is 32001222012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21022210023 - 2¹ = 21022210021 is a prime.

It is a super-2 number, since 2×21022210023² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022209984 and 21022210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022210021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39367168 + ... + 39367701.

It is an arithmetic number, because the mean of its divisors is an integer number (3543069150).

Almost surely, 2^21022210023 is an apocalyptic number.

21022210023 is a deficient number, since it is larger than the sum of its proper divisors (7322343177).

21022210023 is an equidigital number, since it uses as much as digits as its factorization.

21022210023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78734961.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21022210023 its reverse (32001222012), we get a palindrome (53023432035).

The spelling of 21022210023 in words is "twenty-one billion, twenty-two million, two hundred ten thousand, twenty-three".