1212111202012 has 24 divisors (see below), whose sum is σ = 2227518701856. Its totient is φ = 576012959808.

The previous prime is 1212111201979. The next prime is 1212111202097. The reversal of 1212111202012 is 2102021112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41944543 + ... + 41973430.

It is an arithmetic number, because the mean of its divisors is an integer number (92813279244).

Almost surely, 2^{1212111202012} is an apocalyptic number.

It is an amenable number.

1212111202012 is a deficient number, since it is larger than the sum of its proper divisors (1015407499844).

1212111202012 is a wasteful number, since it uses less digits than its factorization.

1212111202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83918157 (or 83918155 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212111202012 its reverse (2102021112121), we get a palindrome (3314132314133).

The spelling of 1212111202012 in words is "one trillion, two hundred twelve billion, one hundred eleven million, two hundred two thousand, twelve".