212012022212120 has 64 divisors (see below), whose sum is σ = 513755584917120. Its totient is φ = 78276158774784.

The previous prime is 212012022212101. The next prime is 212012022212143. The reversal of 212012022212120 is 21212220210212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212012022212092 and 212012022212101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5715104 + ... + 21370223.

It is an arithmetic number, because the mean of its divisors is an integer number (8027431014330).

Almost surely, 2^{212012022212120} is an apocalyptic number.

212012022212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012022212120 is an abundant number, since it is smaller than the sum of its proper divisors (301743562705000).

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

212012022212120 is a wasteful number, since it uses less digits than its factorization.

212012022212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27100404 (or 27100400 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212012022212120 its reverse (21212220210212), we get a palindrome (233224242422332).

The spelling of 212012022212120 in words is "two hundred twelve trillion, twelve billion, twenty-two million, two hundred twelve thousand, one hundred twenty".