21116134666250 has 160 divisors (see below), whose sum is σ = 44879617675200. Its totient is φ = 7384478400000.

The previous prime is 21116134666243. The next prime is 21116134666327. The reversal of 21116134666250 is 5266643161112.

It is a super-2 number, since 2×21116134666250² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1806490406 + ... + 1806502094.

It is an arithmetic number, because the mean of its divisors is an integer number (280497610470).

Almost surely, 2^{21116134666250} is an apocalyptic number.

21116134666250 is an abundant number, since it is smaller than the sum of its proper divisors (23763483008950).

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

21116134666250 is a wasteful number, since it uses less digits than its factorization.

21116134666250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17594 (or 17579 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 21116134666250 in words is "twenty-one trillion, one hundred sixteen billion, one hundred thirty-four million, six hundred sixty-six thousand, two hundred fifty".