212213142031220 has 96 divisors (see below), whose sum is σ = 486816654804480. Its totient is φ = 77064411623040.

The previous prime is 212213142031199. The next prime is 212213142031243. The reversal of 212213142031220 is 22130241312212.

It is a self number, because there is not a number n which added to its sum of digits gives 212213142031220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518680691 + ... + 519089669.

It is an arithmetic number, because the mean of its divisors is an integer number (5071006820880).

Almost surely, 2^{212213142031220} is an apocalyptic number.

212213142031220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212213142031220 is an abundant number, since it is smaller than the sum of its proper divisors (274603512773260).

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

212213142031220 is a wasteful number, since it uses less digits than its factorization.

212213142031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412173 (or 412171 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 212213142031220 its reverse (22130241312212), we get a palindrome (234343383343432).

The spelling of 212213142031220 in words is "two hundred twelve trillion, two hundred thirteen billion, one hundred forty-two million, thirty-one thousand, two hundred twenty".