22201554420 has 72 divisors (see below), whose sum is σ = 67646831616. Its totient is φ = 5893854912.

The previous prime is 22201554377. The next prime is 22201554433. The reversal of 22201554420 is 2445510222.

22201554420 is a `hidden beast` number, since 2 + 220 + 15 + 5 + 4 + 420 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236412 + ... + 316691.

It is an arithmetic number, because the mean of its divisors is an integer number (939539328).

Almost surely, 2^22201554420 is an apocalyptic number.

22201554420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201554420 is an abundant number, since it is smaller than the sum of its proper divisors (45445277196).

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

22201554420 is a wasteful number, since it uses less digits than its factorization.

22201554420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553341 (or 553336 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 22201554420 in words is "twenty-two billion, two hundred one million, five hundred fifty-four thousand, four hundred twenty".