21102113194 has 16 divisors (see below), whose sum is σ = 31965388416. Its totient is φ = 10447434000.

The previous prime is 21102113173. The next prime is 21102113237. The reversal of 21102113194 is 49131120112.

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, 18417 + ... + 206260.

It is an arithmetic number, because the mean of its divisors is an integer number (1997836776).

Almost surely, 2^21102113194 is an apocalyptic number.

21102113194 is a deficient number, since it is larger than the sum of its proper divisors (10863275222).

21102113194 is a wasteful number, since it uses less digits than its factorization.

21102113194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225141.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 21102113194 in words is "twenty-one billion, one hundred two million, one hundred thirteen thousand, one hundred ninety-four".