1131220014 has 32 divisors (see below), whose sum is σ = 2294230176. Its totient is φ = 371804160.

The previous prime is 1131220009. The next prime is 1131220021. The reversal of 1131220014 is 4100221311.

It is a junction number, because it is equal to n+sod(n) for n = 1131219975 and 1131220002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160084 + ... + 167000.

It is an arithmetic number, because the mean of its divisors is an integer number (71694693).

Almost surely, 2^1131220014 is an apocalyptic number.

1131220014 is an abundant number, since it is smaller than the sum of its proper divisors (1163010162).

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

1131220014 is a wasteful number, since it uses less digits than its factorization.

1131220014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7300.

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

The square root of 1131220014 is about 33633.6143463649. The cubic root of 1131220014 is about 1041.9551528426.

Adding to 1131220014 its reverse (4100221311), we get a palindrome (5231441325).

The spelling of 1131220014 in words is "one billion, one hundred thirty-one million, two hundred twenty thousand, fourteen".