23002021220 has 12 divisors (see below), whose sum is σ = 48304244604. Its totient is φ = 9200808480.

The previous prime is 23002021219. The next prime is 23002021267. The reversal of 23002021220 is 2212020032.

It can be written as a sum of positive squares in 2 ways, for example, as 5534169664 + 17467851556 = 74392^2 + 132166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23002021195 and 23002021204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575050511 + ... + 575050550.

It is an arithmetic number, because the mean of its divisors is an integer number (4025353717).

Almost surely, 2^23002021220 is an apocalyptic number.

23002021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23002021220 is an abundant number, since it is smaller than the sum of its proper divisors (25302223384).

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

23002021220 is a wasteful number, since it uses less digits than its factorization.

23002021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150101070 (or 1150101068 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 23002021220 its reverse (2212020032), we get a palindrome (25214041252).

The spelling of 23002021220 in words is "twenty-three billion, two million, twenty-one thousand, two hundred twenty".