212388142212 has 36 divisors (see below), whose sum is σ = 538463143036. Its totient is φ = 70585966080.

The previous prime is 212388142207. The next prime is 212388142229. The reversal of 212388142212 is 212241883212.

It is a happy number.

212388142212 is a `hidden beast` number, since 21 + 2 + 388 + 1 + 42 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30200878656 + 182187263556 = 173784^2 + 426834^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8741089 + ... + 8765352.

Almost surely, 2^212388142212 is an apocalyptic number.

It is an amenable number.

212388142212 is an abundant number, since it is smaller than the sum of its proper divisors (326075000824).

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

212388142212 is a wasteful number, since it uses less digits than its factorization.

212388142212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17506788 (or 17506783 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The spelling of 212388142212 in words is "two hundred twelve billion, three hundred eighty-eight million, one hundred forty-two thousand, two hundred twelve".