23221205004400 has 60 divisors (see below), whose sum is σ = 60080402345992. Its totient is φ = 8573983384320.

The previous prime is 23221205004337. The next prime is 23221205004419. The reversal of 23221205004400 is 440050212232.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2232802974 + ... + 2232813373.

Almost surely, 2^{23221205004400} is an apocalyptic number.

23221205004400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23221205004400 is an abundant number, since it is smaller than the sum of its proper divisors (36859197341592).

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

23221205004400 is a wasteful number, since it uses less digits than its factorization.

23221205004400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465616378 (or 4465616367 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 23221205004400 its reverse (440050212232), we get a palindrome (23661255216632).

The spelling of 23221205004400 in words is "twenty-three trillion, two hundred twenty-one billion, two hundred five million, four thousand, four hundred".