1120222211221 has 4 divisors (see below), whose sum is σ = 1125114011500. Its totient is φ = 1115330410944.

The previous prime is 1120222211203. The next prime is 1120222211267. The reversal of 1120222211221 is 1221122220211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 570976696900 + 549245514321 = 755630^2 + 741111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120222211221 - 2²³ = 1120213822613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120222218221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2445899796 + ... + 2445900253.

It is an arithmetic number, because the mean of its divisors is an integer number (281278502875).

Almost surely, 2^{1120222211221} is an apocalyptic number.

It is an amenable number.

1120222211221 is a deficient number, since it is larger than the sum of its proper divisors (4891800279).

1120222211221 is an equidigital number, since it uses as much as digits as its factorization.

1120222211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891800278.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1120222211221 its reverse (1221122220211), we get a palindrome (2341344431432).

The spelling of 1120222211221 in words is "one trillion, one hundred twenty billion, two hundred twenty-two million, two hundred eleven thousand, two hundred twenty-one".