212949111897 has 24 divisors (see below), whose sum is σ = 322759944000. Its totient is φ = 135034989408.

The previous prime is 212949111883. The next prime is 212949111913. The reversal of 212949111897 is 798111949212.

It is not a de Polignac number, because 212949111897 - 2⁷ = 212949111769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212949111497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2836522 + ... + 2910627.

It is an arithmetic number, because the mean of its divisors is an integer number (13448331000).

Almost surely, 2^212949111897 is an apocalyptic number.

It is an amenable number.

212949111897 is a deficient number, since it is larger than the sum of its proper divisors (109810832103).

212949111897 is a wasteful number, since it uses less digits than its factorization.

212949111897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747357 (or 5747354 counting only the distinct ones).

The product of its digits is 653184, while the sum is 54.

The spelling of 212949111897 in words is "two hundred twelve billion, nine hundred forty-nine million, one hundred eleven thousand, eight hundred ninety-seven".