1212202211212 has 12 divisors (see below), whose sum is σ = 2121623234640. Its totient is φ = 606024144176.

The previous prime is 1212202211161. The next prime is 1212202211219. The reversal of 1212202211212 is 2121122022121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212202211212.

It is not an unprimeable number, because it can be changed into a prime (1212202211219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19204912 + ... + 19267927.

It is an arithmetic number, because the mean of its divisors is an integer number (176801936220).

Almost surely, 2^{1212202211212} is an apocalyptic number.

It is an amenable number.

1212202211212 is a deficient number, since it is larger than the sum of its proper divisors (909421023428).

1212202211212 is a wasteful number, since it uses less digits than its factorization.

1212202211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38480720 (or 38480718 counting only the distinct ones).

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

Adding to 1212202211212 its reverse (2121122022121), we get a palindrome (3333324233333).

The spelling of 1212202211212 in words is "one trillion, two hundred twelve billion, two hundred two million, two hundred eleven thousand, two hundred twelve".