212201112121012 has 48 divisors (see below), whose sum is σ = 426477668198400. Its totient is φ = 90499572165600.

The previous prime is 212201112120989. The next prime is 212201112121027. The reversal of 212201112121012 is 210121211102212.

It is a happy number.

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, 15124914 + ... + 25557097.

It is an arithmetic number, because the mean of its divisors is an integer number (8884951420800).

Almost surely, 2^{212201112121012} is an apocalyptic number.

It is an amenable number.

212201112121012 is an abundant number, since it is smaller than the sum of its proper divisors (214276556077388).

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

212201112121012 is a wasteful number, since it uses less digits than its factorization.

212201112121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40682932 (or 40682930 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212201112121012 its reverse (210121211102212), we get a palindrome (422322323223224).

The spelling of 212201112121012 in words is "two hundred twelve trillion, two hundred one billion, one hundred twelve million, one hundred twenty-one thousand, twelve".