212640312434220 has 144 divisors (see below), whose sum is σ = 703661109645312. Its totient is φ = 51548068859520.

The previous prime is 212640312434219. The next prime is 212640312434273. The reversal of 212640312434220 is 22434213046212.

212640312434220 is a `hidden beast` number, since 2 + 1 + 2 + 6 + 403 + 1 + 24 + 3 + 4 + 220 = 666.

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 47 ways as a sum of consecutive naturals, for example, 93847189 + ... + 96086291.

It is an arithmetic number, because the mean of its divisors is an integer number (4886535483648).

Almost surely, 2^{212640312434220} is an apocalyptic number.

212640312434220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212640312434220 is an abundant number, since it is smaller than the sum of its proper divisors (491020797211092).

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

212640312434220 is a wasteful number, since it uses less digits than its factorization.

212640312434220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287092 (or 2287087 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 212640312434220 in words is "two hundred twelve trillion, six hundred forty billion, three hundred twelve million, four hundred thirty-four thousand, two hundred twenty".