23020211220 has 24 divisors (see below), whose sum is σ = 64456591584. Its totient is φ = 6138722976.

The previous prime is 23020211213. The next prime is 23020211233. The reversal of 23020211220 is 2211202032.

It is a happy number.

It is a super-2 number, since 2×23020211220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23020211220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191835034 + ... + 191835153.

It is an arithmetic number, because the mean of its divisors is an integer number (2685691316).

Almost surely, 2^23020211220 is an apocalyptic number.

23020211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23020211220 is an abundant number, since it is smaller than the sum of its proper divisors (41436380364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23020211220 is a wasteful number, since it uses less digits than its factorization.

23020211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383670199 (or 383670197 counting only the distinct ones).

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

Adding to 23020211220 its reverse (2211202032), we get a palindrome (25231413252).

The spelling of 23020211220 in words is "twenty-three billion, twenty million, two hundred eleven thousand, two hundred twenty".