1211221120022 has 16 divisors (see below), whose sum is σ = 1886794227360. Its totient is φ = 582452226048.

The previous prime is 1211221120007. The next prime is 1211221120033. The reversal of 1211221120022 is 2200211221121.

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, 40613738 + ... + 40643549.

It is an arithmetic number, because the mean of its divisors is an integer number (117924639210).

Almost surely, 2^{1211221120022} is an apocalyptic number.

1211221120022 is a deficient number, since it is larger than the sum of its proper divisors (675573107338).

1211221120022 is a wasteful number, since it uses less digits than its factorization.

1211221120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81257575.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211221120022 its reverse (2200211221121), we get a palindrome (3411432341143).

The spelling of 1211221120022 in words is "one trillion, two hundred eleven billion, two hundred twenty-one million, one hundred twenty thousand, twenty-two".