21200122101194 has 4 divisors (see below), whose sum is σ = 31800183151794. Its totient is φ = 10600061050596.

The previous prime is 21200122101157. The next prime is 21200122101217. The reversal of 21200122101194 is 49110122100212.

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., 15983900052169 + 5216222049025 = 3997987^2 + 2283905^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300030525297 + ... + 5300030525300.

Almost surely, 2^{21200122101194} is an apocalyptic number.

21200122101194 is a deficient number, since it is larger than the sum of its proper divisors (10600061050600).

21200122101194 is a wasteful number, since it uses less digits than its factorization.

21200122101194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600061050599.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 21200122101194 in words is "twenty-one trillion, two hundred billion, one hundred twenty-two million, one hundred one thousand, one hundred ninety-four".