1212111223042 has 16 divisors (see below), whose sum is σ = 1861060370400. Its totient is φ = 591767017632.

The previous prime is 1212111223027. The next prime is 1212111223117. The reversal of 1212111223042 is 2403221112121.

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, 2049088 + ... + 2573515.

It is an arithmetic number, because the mean of its divisors is an integer number (116316273150).

Almost surely, 2^{1212111223042} is an apocalyptic number.

1212111223042 is a deficient number, since it is larger than the sum of its proper divisors (648949147358).

1212111223042 is a wasteful number, since it uses less digits than its factorization.

1212111223042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625697.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1212111223042 its reverse (2403221112121), we get a palindrome (3615332335163).

The spelling of 1212111223042 in words is "one trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty-three thousand, forty-two".