22011898755856 has 15 divisors (see below), whose sum is σ = 42648090200053. Its totient is φ = 11005939994560.

The previous prime is 22011898755853. The next prime is 22011898755863. The reversal of 22011898755856 is 65855789811022.

The square root of 22011898755856 is 4691684.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8949167978256 + 13062730777600 = 2991516^2 + 3614240^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011898755791 and 22011898755800.

It is not an unprimeable number, because it can be changed into a prime (22011898755853) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18180276 + ... + 19353196.

Almost surely, 2^{22011898755856} is an apocalyptic number.

22011898755856 is the 4691684-th square number.

It is an amenable number.

22011898755856 is a deficient number, since it is larger than the sum of its proper divisors (20636191444197).

22011898755856 is an frugal number, since it uses more digits than its factorization.

22011898755856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345850 (or 1172923 counting only the distinct ones).

The product of its (nonzero) digits is 96768000, while the sum is 67.

The spelling of 22011898755856 in words is "twenty-two trillion, eleven billion, eight hundred ninety-eight million, seven hundred fifty-five thousand, eight hundred fifty-six".