212120109994 has 16 divisors (see below), whose sum is σ = 357553631232. Its totient is φ = 93644998128.

The previous prime is 212120109989. The next prime is 212120110001. The reversal of 212120109994 is 499901021212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177357354 + ... + 177358549.

It is an arithmetic number, because the mean of its divisors is an integer number (22347101952).

Almost surely, 2^212120109994 is an apocalyptic number.

212120109994 is a deficient number, since it is larger than the sum of its proper divisors (145433521238).

212120109994 is a wasteful number, since it uses less digits than its factorization.

212120109994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354715941.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 212120109994 in words is "two hundred twelve billion, one hundred twenty million, one hundred nine thousand, nine hundred ninety-four".