21010211222194 has 16 divisors (see below), whose sum is σ = 31576638693600. Its totient is φ = 10484678627584.

The previous prime is 21010211222183. The next prime is 21010211222251. The reversal of 21010211222194 is 49122211201012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324847 + ... + 6490450.

It is an arithmetic number, because the mean of its divisors is an integer number (1973539918350).

Almost surely, 2^{21010211222194} is an apocalyptic number.

21010211222194 is a deficient number, since it is larger than the sum of its proper divisors (10566427471406).

21010211222194 is a wasteful number, since it uses less digits than its factorization.

21010211222194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6818297.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 21010211222194 in words is "twenty-one trillion, ten billion, two hundred eleven million, two hundred twenty-two thousand, one hundred ninety-four".