1131200122 has 16 divisors (see below), whose sum is σ = 1906773120. Its totient is φ = 499392432.

The previous prime is 1131200087. The next prime is 1131200123. The reversal of 1131200122 is 2210021311.

It is a super-2 number, since 2×1131200122² = 2559227432025629768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1131200123) 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, 945222 + ... + 946417.

It is an arithmetic number, because the mean of its divisors is an integer number (119173320).

Almost surely, 2^1131200122 is an apocalyptic number.

1131200122 is a deficient number, since it is larger than the sum of its proper divisors (775572998).

1131200122 is a wasteful number, since it uses less digits than its factorization.

1131200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891677.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1131200122 is about 33633.3186290024. The cubic root of 1131200122 is about 1041.9490453677.

Adding to 1131200122 its reverse (2210021311), we get a palindrome (3341221433).

The spelling of 1131200122 in words is "one billion, one hundred thirty-one million, two hundred thousand, one hundred twenty-two".