212012122 has 24 divisors (see below), whose sum is σ = 370617876. Its totient is φ = 90695808.

The previous prime is 212012077. The next prime is 212012123. The reversal of 212012122 is 221210212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 209351961 + 2660161 = 14469^2 + 1631^2 .

It is not an unprimeable number, because it can be changed into a prime (212012123) 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, 62338 + ... + 65650.

Almost surely, 2^212012122 is an apocalyptic number.

212012122 is a deficient number, since it is larger than the sum of its proper divisors (158605754).

212012122 is a wasteful number, since it uses less digits than its factorization.

212012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982 (or 3975 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212012122 is about 14560.6360437997. The cubic root of 212012122 is about 596.2845603749.

Adding to 212012122 its reverse (221210212), we get a palindrome (433222334).

The spelling of 212012122 in words is "two hundred twelve million, twelve thousand, one hundred twenty-two".