21012202100195 has 8 divisors (see below), whose sum is σ = 25216370703360. Its totient is φ = 16808609558080.

The previous prime is 21012202100189. The next prime is 21012202100209. The reversal of 21012202100195 is 59100120221012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21012202100195 - 2⁴ = 21012202100179 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 143935010 + ... + 144080919.

It is an arithmetic number, because the mean of its divisors is an integer number (3152046337920).

Almost surely, 2^{21012202100195} is an apocalyptic number.

21012202100195 is a deficient number, since it is larger than the sum of its proper divisors (4204168603165).

21012202100195 is a wasteful number, since it uses less digits than its factorization.

21012202100195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288030525.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 21012202100195 in words is "twenty-one trillion, twelve billion, two hundred two million, one hundred thousand, one hundred ninety-five".