23221121388 has 48 divisors (see below), whose sum is σ = 55001218944. Its totient is φ = 7624189440.

The previous prime is 23221121387. The next prime is 23221121419. The reversal of 23221121388 is 88312112232.

It is not an unprimeable number, because it can be changed into a prime (23221121387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198331 + ... + 292877.

It is an arithmetic number, because the mean of its divisors is an integer number (1145858728).

Almost surely, 2^23221121388 is an apocalyptic number.

It is an amenable number.

23221121388 is an abundant number, since it is smaller than the sum of its proper divisors (31780097556).

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

23221121388 is a wasteful number, since it uses less digits than its factorization.

23221121388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94862 (or 94860 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The spelling of 23221121388 in words is "twenty-three billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred eighty-eight".