212120220222012 has 48 divisors (see below), whose sum is σ = 521017444886400. Its totient is φ = 66982708203840.

The previous prime is 212120220221951. The next prime is 212120220222017. The reversal of 212120220222012 is 210222022021212.

It is a super-2 number, since 2×212120220222012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212120220222012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120220222017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12389562 + ... + 24036257.

It is an arithmetic number, because the mean of its divisors is an integer number (10854530101800).

Almost surely, 2^{212120220222012} is an apocalyptic number.

It is an amenable number.

212120220222012 is an abundant number, since it is smaller than the sum of its proper divisors (308897224664388).

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

212120220222012 is a wasteful number, since it uses less digits than its factorization.

212120220222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36451386 (or 36451384 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212120220222012 its reverse (210222022021212), we get a palindrome (422342242243224).

The spelling of 212120220222012 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred twenty million, two hundred twenty-two thousand, twelve".