23221147730 has 32 divisors (see below), whose sum is σ = 47997783360. Its totient is φ = 7999629120.

The previous prime is 23221147693. The next prime is 23221147753. The reversal of 23221147730 is 3774112232.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5553209 + ... + 5557388.

It is an arithmetic number, because the mean of its divisors is an integer number (1499930730).

Almost surely, 2^23221147730 is an apocalyptic number.

23221147730 is an abundant number, since it is smaller than the sum of its proper divisors (24776635630).

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

23221147730 is a wasteful number, since it uses less digits than its factorization.

23221147730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110634.

The product of its (nonzero) digits is 14112, while the sum is 32.

Adding to 23221147730 its reverse (3774112232), we get a palindrome (26995259962).

The spelling of 23221147730 in words is "twenty-three billion, two hundred twenty-one million, one hundred forty-seven thousand, seven hundred thirty".