21100202210986 has 4 divisors (see below), whose sum is σ = 31650303316482. Its totient is φ = 10550101105492.

The previous prime is 21100202210951. The next prime is 21100202211007. The reversal of 21100202210986 is 68901220200112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20886590934225 + 213611276761 = 4570185^2 + 462181^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275050552745 + ... + 5275050552748.

Almost surely, 2^{21100202210986} is an apocalyptic number.

21100202210986 is a deficient number, since it is larger than the sum of its proper divisors (10550101105496).

21100202210986 is a wasteful number, since it uses less digits than its factorization.

21100202210986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10550101105495.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 21100202210986 in words is "twenty-one trillion, one hundred billion, two hundred two million, two hundred ten thousand, nine hundred eighty-six".