212205025422 has 48 divisors (see below), whose sum is σ = 510631444080. Its totient is φ = 65293851168.

The previous prime is 212205025411. The next prime is 212205025433. The reversal of 212205025422 is 224520502212.

It is a happy number.

212205025422 is a `hidden beast` number, since 2 + 12 + 205 + 0 + 25 + 422 = 666.

212205025422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212205025411) and next prime (212205025433).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11617273 + ... + 11635524.

It is an arithmetic number, because the mean of its divisors is an integer number (10638155085).

Almost surely, 2^212205025422 is an apocalyptic number.

212205025422 is an abundant number, since it is smaller than the sum of its proper divisors (298426418658).

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

212205025422 is a wasteful number, since it uses less digits than its factorization.

212205025422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23252834 (or 23252815 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 212205025422 its reverse (224520502212), we get a palindrome (436725527634).

The spelling of 212205025422 in words is "two hundred twelve billion, two hundred five million, twenty-five thousand, four hundred twenty-two".