212322199988 has 12 divisors (see below), whose sum is σ = 384376396740. Its totient is φ = 102500372352.

The previous prime is 212322199987. The next prime is 212322200011. The reversal of 212322199988 is 889991223212.

It can be written as a sum of positive squares in 2 ways, for example, as 41490430864 + 170831769124 = 203692^2 + 413318^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212322199981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915181781 + ... + 915182012.

It is an arithmetic number, because the mean of its divisors is an integer number (32031366395).

Almost surely, 2^212322199988 is an apocalyptic number.

It is an amenable number.

212322199988 is a deficient number, since it is larger than the sum of its proper divisors (172054196752).

212322199988 is a wasteful number, since it uses less digits than its factorization.

212322199988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830363826 (or 1830363824 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 56.

The spelling of 212322199988 in words is "two hundred twelve billion, three hundred twenty-two million, one hundred ninety-nine thousand, nine hundred eighty-eight".