1210222211212 has 72 divisors (see below), whose sum is σ = 2614779417600. Its totient is φ = 479882823936.

The previous prime is 1210222211173. The next prime is 1210222211221. The reversal of 1210222211212 is 2121122220121.

It is a self number, because there is not a number n which added to its sum of digits gives 1210222211212.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 790012 + ... + 1744867.

It is an arithmetic number, because the mean of its divisors is an integer number (36316380800).

Almost surely, 2^{1210222211212} is an apocalyptic number.

It is an amenable number.

1210222211212 is an abundant number, since it is smaller than the sum of its proper divisors (1404557206388).

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

1210222211212 is a wasteful number, since it uses less digits than its factorization.

1210222211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534983 (or 2534964 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1210222211212 its reverse (2121122220121), we get a palindrome (3331344431333).

The spelling of 1210222211212 in words is "one trillion, two hundred ten billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twelve".