212322200128 has 28 divisors (see below), whose sum is σ = 446110801452. Its totient is φ = 99916328960.

The previous prime is 212322200119. The next prime is 212322200239. The reversal of 212322200128 is 821002223212.

It can be written as a sum of positive squares in 2 ways, for example, as 133289247744 + 79032952384 = 365088^2 + 281128^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97573453 + ... + 97575628.

Almost surely, 2^212322200128 is an apocalyptic number.

It is an amenable number.

212322200128 is an abundant number, since it is smaller than the sum of its proper divisors (233788601324).

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

212322200128 is a wasteful number, since it uses less digits than its factorization.

212322200128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195149110 (or 195149100 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The spelling of 212322200128 in words is "two hundred twelve billion, three hundred twenty-two million, two hundred thousand, one hundred twenty-eight".