22221256135756 has 24 divisors (see below), whose sum is σ = 41174914180176. Its totient is φ = 10457002360320.

The previous prime is 22221256135747. The next prime is 22221256135763. The reversal of 22221256135756 is 65753165212222.

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, 12577216 + ... + 14234776.

It is an arithmetic number, because the mean of its divisors is an integer number (1715621424174).

Almost surely, 2^{22221256135756} is an apocalyptic number.

It is an amenable number.

22221256135756 is a deficient number, since it is larger than the sum of its proper divisors (18953658044420).

22221256135756 is a wasteful number, since it uses less digits than its factorization.

22221256135756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854729 (or 1854727 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 49.

It can be divided in two parts, 2222125 and 6135756, that added together give a square (8357881 = 2891²).

The spelling of 22221256135756 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred fifty-six million, one hundred thirty-five thousand, seven hundred fifty-six".