1131220122 has 16 divisors (see below), whose sum is σ = 2263085760. Its totient is φ = 376965792.

The previous prime is 1131220093. The next prime is 1131220127. The reversal of 1131220122 is 2210221311.

It is not an unprimeable number, because it can be changed into a prime (1131220127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398 + ... + 47625.

It is an arithmetic number, because the mean of its divisors is an integer number (141442860).

Almost surely, 2^1131220122 is an apocalyptic number.

1131220122 is an abundant number, since it is smaller than the sum of its proper divisors (1131865638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131220122 is a wasteful number, since it uses less digits than its factorization.

1131220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53797.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1131220122 is about 33633.6159519015. The cubic root of 1131220122 is about 1041.9551860018.

Adding to 1131220122 its reverse (2210221311), we get a palindrome (3341441433).

The spelling of 1131220122 in words is "one billion, one hundred thirty-one million, two hundred twenty thousand, one hundred twenty-two".