22011900774552 has 384 divisors, whose sum is σ = 65547991454400. Its totient is φ = 6632141193216.

The previous prime is 22011900774491. The next prime is 22011900774559. The reversal of 22011900774552 is 25547700911022.

22011900774552 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 1 + 90 + 0 + 7 + 7 + 4 + 552 = 666.

22011900774552 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 22011900774498 and 22011900774507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011900774559) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14743402318 + ... + 14743403810.

Almost surely, 2^{22011900774552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22011900774552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32773995727200).

22011900774552 is an abundant number, since it is smaller than the sum of its proper divisors (43536090679848).

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

22011900774552 is a wasteful number, since it uses less digits than its factorization.

22011900774552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827 (or 2820 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 22011900774552 in words is "twenty-two trillion, eleven billion, nine hundred million, seven hundred seventy-four thousand, five hundred fifty-two".