211210211121912 has 48 divisors (see below), whose sum is σ = 587487862024440. Its totient is φ = 68500609011648.

The previous prime is 211210211121911. The next prime is 211210211122013. The reversal of 211210211121912 is 219121112012112.

It is a happy number.

211210211121912 is a `hidden beast` number, since 2 + 11 + 210 + 211 + 1 + 219 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210211121911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39641553478 + ... + 39641558805.

Almost surely, 2^{211210211121912} is an apocalyptic number.

It is an amenable number.

211210211121912 is an abundant number, since it is smaller than the sum of its proper divisors (376277650902528).

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

211210211121912 is a wasteful number, since it uses less digits than its factorization.

211210211121912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79283112332 (or 79283112325 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 27.

The spelling of 211210211121912 in words is "two hundred eleven trillion, two hundred ten billion, two hundred eleven million, one hundred twenty-one thousand, nine hundred twelve".