212220640030 has 96 divisors (see below), whose sum is σ = 468056028960. Its totient is φ = 68886961920.

The previous prime is 212220640019. The next prime is 212220640033. The reversal of 212220640030 is 30046022212.

It is a junction number, because it is equal to n+sod(n) for n = 212220639983 and 212220640010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220640033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16202164 + ... + 16215256.

It is an arithmetic number, because the mean of its divisors is an integer number (4875583635).

Almost surely, 2^212220640030 is an apocalyptic number.

212220640030 is an abundant number, since it is smaller than the sum of its proper divisors (255835388930).

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

212220640030 is a wasteful number, since it uses less digits than its factorization.

212220640030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14874 (or 14867 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212220640030 its reverse (30046022212), we get a palindrome (242266662242).

The spelling of 212220640030 in words is "two hundred twelve billion, two hundred twenty million, six hundred forty thousand, thirty".