212392420330 has 16 divisors (see below), whose sum is σ = 387543431304. Its totient is φ = 83793173760.

The previous prime is 212392420319. The next prime is 212392420343. The reversal of 212392420330 is 33024293212.

It can be written as a sum of positive squares in 4 ways, for example, as 163069784761 + 49322635569 = 403819^2 + 222087^2 .

It is a super-2 number, since 2×212392420330² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212392420292 and 212392420301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145473531 + ... + 145474990.

Almost surely, 2^212392420330 is an apocalyptic number.

212392420330 is a deficient number, since it is larger than the sum of its proper divisors (175151010974).

212392420330 is a wasteful number, since it uses less digits than its factorization.

212392420330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290948601.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 212392420330 in words is "two hundred twelve billion, three hundred ninety-two million, four hundred twenty thousand, three hundred thirty".