212022031212 has 36 divisors (see below), whose sum is σ = 539493894576. Its totient is φ = 70205968800.

The previous prime is 212022031211. The next prime is 212022031261. The reversal of 212022031212 is 212130220212.

212022031212 is a `hidden beast` number, since 2 + 120 + 220 + 312 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212022031211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19496223 + ... + 19507094.

It is an arithmetic number, because the mean of its divisors is an integer number (14985941516).

Almost surely, 2^212022031212 is an apocalyptic number.

It is an amenable number.

212022031212 is an abundant number, since it is smaller than the sum of its proper divisors (327471863364).

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

212022031212 is a wasteful number, since it uses less digits than its factorization.

212022031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39003478 (or 39003473 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212022031212 its reverse (212130220212), we get a palindrome (424152251424).

The spelling of 212022031212 in words is "two hundred twelve billion, twenty-two million, thirty-one thousand, two hundred twelve".