212111209974 has 16 divisors (see below), whose sum is σ = 424227579840. Its totient is φ = 70702876680.

The previous prime is 212111209969. The next prime is 212111210023. The reversal of 212111209974 is 479902111212.

212111209974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504757 + ... + 824015.

It is an arithmetic number, because the mean of its divisors is an integer number (26514223740).

Almost surely, 2^212111209974 is an apocalyptic number.

212111209974 is an abundant number, since it is smaller than the sum of its proper divisors (212116369866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212111209974 is a wasteful number, since it uses less digits than its factorization.

212111209974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429995.

The product of its (nonzero) digits is 18144, while the sum is 39.

The spelling of 212111209974 in words is "two hundred twelve billion, one hundred eleven million, two hundred nine thousand, nine hundred seventy-four".