23221320212 has 12 divisors (see below), whose sum is σ = 42776116320. Its totient is φ = 10999572696.

The previous prime is 23221320211. The next prime is 23221320271. The reversal of 23221320212 is 21202312232.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221320211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152771768 + ... + 152771919.

It is an arithmetic number, because the mean of its divisors is an integer number (3564676360).

Almost surely, 2^23221320212 is an apocalyptic number.

It is an amenable number.

23221320212 is a deficient number, since it is larger than the sum of its proper divisors (19554796108).

23221320212 is a wasteful number, since it uses less digits than its factorization.

23221320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305543710 (or 305543708 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23221320212 its reverse (21202312232), we get a palindrome (44423632444).

The spelling of 23221320212 in words is "twenty-three billion, two hundred twenty-one million, three hundred twenty thousand, two hundred twelve".