23021210212203 has 16 divisors (see below), whose sum is σ = 35082446065920. Its totient is φ = 13154037253536.

The previous prime is 23021210212201. The next prime is 23021210212211. The reversal of 23021210212203 is 30221201212032.

It is not a de Polignac number, because 23021210212203 - 2¹ = 23021210212201 is a prime.

It is a super-2 number, since 2×23021210212203² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 23021210212203.

It is not an unprimeable number, because it can be changed into a prime (23021210212201) 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, 38866173 + ... + 39454046.

It is an arithmetic number, because the mean of its divisors is an integer number (2192652879120).

Almost surely, 2^{23021210212203} is an apocalyptic number.

23021210212203 is a deficient number, since it is larger than the sum of its proper divisors (12061235853717).

23021210212203 is a wasteful number, since it uses less digits than its factorization.

23021210212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78334226.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 23021210212203 its reverse (30221201212032), we get a palindrome (53242411424235).

The spelling of 23021210212203 in words is "twenty-three trillion, twenty-one billion, two hundred ten million, two hundred twelve thousand, two hundred three".