1211333322142 has 16 divisors (see below), whose sum is σ = 1819740424320. Its totient is φ = 604753402968.

The previous prime is 1211333322097. The next prime is 1211333322233. The reversal of 1211333322142 is 2412233331121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211333322142.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11794609 + ... + 11896867.

It is an arithmetic number, because the mean of its divisors is an integer number (113733776520).

Almost surely, 2^{1211333322142} is an apocalyptic number.

1211333322142 is a deficient number, since it is larger than the sum of its proper divisors (608407102178).

1211333322142 is a wasteful number, since it uses less digits than its factorization.

1211333322142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111135.

The product of its digits is 5184, while the sum is 28.

Adding to 1211333322142 its reverse (2412233331121), we get a palindrome (3623566653263).

The spelling of 1211333322142 in words is "one trillion, two hundred eleven billion, three hundred thirty-three million, three hundred twenty-two thousand, one hundred forty-two".