23221153240 has 32 divisors (see below), whose sum is σ = 54997470000. Its totient is φ = 8799594624.

The previous prime is 23221153237. The next prime is 23221153279. The reversal of 23221153240 is 4235112232.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15276315 + ... + 15277834.

Almost surely, 2^23221153240 is an apocalyptic number.

23221153240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23221153240 is an abundant number, since it is smaller than the sum of its proper divisors (31776316760).

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

23221153240 is a wasteful number, since it uses less digits than its factorization.

23221153240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30554179 (or 30554175 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 23221153240 its reverse (4235112232), we get a palindrome (27456265472).

The spelling of 23221153240 in words is "twenty-three billion, two hundred twenty-one million, one hundred fifty-three thousand, two hundred forty".