23221045552 has 40 divisors (see below), whose sum is σ = 47649646656. Its totient is φ = 10924717056.

The previous prime is 23221045543. The next prime is 23221045579. The reversal of 23221045552 is 25554012232.

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, 1344073 + ... + 1361239.

Almost surely, 2^23221045552 is an apocalyptic number.

It is an amenable number.

23221045552 is an abundant number, since it is smaller than the sum of its proper divisors (24428601104).

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

23221045552 is a wasteful number, since it uses less digits than its factorization.

23221045552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22165 (or 22159 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 23221045552 its reverse (25554012232), we get a palindrome (48775057784).

The spelling of 23221045552 in words is "twenty-three billion, two hundred twenty-one million, forty-five thousand, five hundred fifty-two".