23021082220 has 24 divisors (see below), whose sum is σ = 49372876224. Its totient is φ = 9012508416.

The previous prime is 23021082199. The next prime is 23021082239. The reversal of 23021082220 is 2228012032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23021082191 and 23021082200.

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, 12244317 + ... + 12246196.

It is an arithmetic number, because the mean of its divisors is an integer number (2057203176).

Almost surely, 2^23021082220 is an apocalyptic number.

23021082220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021082220 is an abundant number, since it is smaller than the sum of its proper divisors (26351794004).

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

23021082220 is a wasteful number, since it uses less digits than its factorization.

23021082220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24490569 (or 24490567 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 23021082220 its reverse (2228012032), we get a palindrome (25249094252).

The spelling of 23021082220 in words is "twenty-three billion, twenty-one million, eighty-two thousand, two hundred twenty".