1221120112022 has 4 divisors (see below), whose sum is σ = 1831680168036. Its totient is φ = 610560056010.

The previous prime is 1221120111877. The next prime is 1221120112061. The reversal of 1221120112022 is 2202110211221.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1221120112022² (a number of 25 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 305280028004 + ... + 305280028007.

It is an arithmetic number, because the mean of its divisors is an integer number (457920042009).

Almost surely, 2^{1221120112022} is an apocalyptic number.

1221120112022 is a deficient number, since it is larger than the sum of its proper divisors (610560056014).

1221120112022 is an equidigital number, since it uses as much as digits as its factorization.

1221120112022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610560056013.

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

Adding to 1221120112022 its reverse (2202110211221), we get a palindrome (3423230323243).

The spelling of 1221120112022 in words is "one trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twelve thousand, twenty-two".