212522231412 has 288 divisors, whose sum is σ = 590816378880. Its totient is φ = 66705949440.

The previous prime is 212522231371. The next prime is 212522231429. The reversal of 212522231412 is 214132225212.

212522231412 is a `hidden beast` number, since 2 + 1 + 25 + 2 + 223 + 1 + 412 = 666.

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 (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173770633 + ... + 173771855.

It is an arithmetic number, because the mean of its divisors is an integer number (2051445760).

Almost surely, 2^212522231412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212522231412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295408189440).

212522231412 is an abundant number, since it is smaller than the sum of its proper divisors (378294147468).

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

212522231412 is a wasteful number, since it uses less digits than its factorization.

212522231412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1411 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

Adding to 212522231412 its reverse (214132225212), we get a palindrome (426654456624).

The spelling of 212522231412 in words is "two hundred twelve billion, five hundred twenty-two million, two hundred thirty-one thousand, four hundred twelve".