23211002220 has 96 divisors (see below), whose sum is σ = 74314845696. Its totient is φ = 5302540800.

The previous prime is 23211002201. The next prime is 23211002231. The reversal of 23211002220 is 2220011232.

It is a happy number.

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 23211002220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 830880 + ... + 858360.

It is an arithmetic number, because the mean of its divisors is an integer number (774112976).

Almost surely, 2^23211002220 is an apocalyptic number.

23211002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23211002220 is an abundant number, since it is smaller than the sum of its proper divisors (51103843476).

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

23211002220 is a wasteful number, since it uses less digits than its factorization.

23211002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29511 (or 29509 counting only the distinct ones).

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

Adding to 23211002220 its reverse (2220011232), we get a palindrome (25431013452).

The spelling of 23211002220 in words is "twenty-three billion, two hundred eleven million, two thousand, two hundred twenty".