212131100195 has 16 divisors (see below), whose sum is σ = 290932250880. Its totient is φ = 145456526304.

The previous prime is 212131100183. The next prime is 212131100201. The reversal of 212131100195 is 591001131212.

It is a cyclic number.

It is not a de Polignac number, because 212131100195 - 2⁶ = 212131100131 is a prime.

It is a super-2 number, since 2×212131100195² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1222136 + ... + 1384874.

It is an arithmetic number, because the mean of its divisors is an integer number (18183265680).

Almost surely, 2^212131100195 is an apocalyptic number.

212131100195 is a deficient number, since it is larger than the sum of its proper divisors (78801150685).

212131100195 is a wasteful number, since it uses less digits than its factorization.

212131100195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199994.

The product of its (nonzero) digits is 540, while the sum is 26.

The spelling of 212131100195 in words is "two hundred twelve billion, one hundred thirty-one million, one hundred thousand, one hundred ninety-five".