212897879501 has 4 divisors (see below), whose sum is σ = 212900955552. Its totient is φ = 212894803452.

The previous prime is 212897879483. The next prime is 212897879671. The reversal of 212897879501 is 105978798212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212897879501 - 2⁶ = 212897879437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212894879501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431761 + ... + 1573446.

It is an arithmetic number, because the mean of its divisors is an integer number (53225238888).

Almost surely, 2^212897879501 is an apocalyptic number.

It is an amenable number.

212897879501 is a deficient number, since it is larger than the sum of its proper divisors (3076051).

212897879501 is an equidigital number, since it uses as much as digits as its factorization.

212897879501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076050.

The product of its (nonzero) digits is 5080320, while the sum is 59.

The spelling of 212897879501 in words is "two hundred twelve billion, eight hundred ninety-seven million, eight hundred seventy-nine thousand, five hundred one".