212121310221112 has 16 divisors (see below), whose sum is σ = 397728352135800. Its totient is φ = 106060416318240.

The previous prime is 212121310221103. The next prime is 212121310221179. The reversal of 212121310221112 is 211122013121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26045214 + ... + 33205357.

Almost surely, 2^{212121310221112} is an apocalyptic number.

It is an amenable number.

212121310221112 is a deficient number, since it is larger than the sum of its proper divisors (185607041914688).

212121310221112 is a wasteful number, since it uses less digits than its factorization.

212121310221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59698086 (or 59698082 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 212121310221112 its reverse (211122013121212), we get a palindrome (423243323342324).

The spelling of 212121310221112 in words is "two hundred twelve trillion, one hundred twenty-one billion, three hundred ten million, two hundred twenty-one thousand, one hundred twelve".