23220311212 has 12 divisors (see below), whose sum is σ = 46440622480. Its totient is φ = 9951561936.

The previous prime is 23220311201. The next prime is 23220311267. The reversal of 23220311212 is 21211302232.

23220311212 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 23220311212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414648387 + ... + 414648442.

Almost surely, 2^23220311212 is an apocalyptic number.

It is an amenable number.

23220311212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23220311212 is a wasteful number, since it uses less digits than its factorization.

23220311212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829296840 (or 829296838 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23220311212 its reverse (21211302232), we get a palindrome (44431613444).

The spelling of 23220311212 in words is "twenty-three billion, two hundred twenty million, three hundred eleven thousand, two hundred twelve".