11131130212 has 6 divisors (see below), whose sum is σ = 19479477878. Its totient is φ = 5565565104.

The previous prime is 11131130177. The next prime is 11131130237. The reversal of 11131130212 is 21203113111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10505430016 + 625700196 = 102496^2 + 25014^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391391273 + ... + 1391391280.

Almost surely, 2^11131130212 is an apocalyptic number.

It is an amenable number.

11131130212 is a deficient number, since it is larger than the sum of its proper divisors (8348347666).

11131130212 is a wasteful number, since it uses less digits than its factorization.

11131130212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782782557 (or 2782782555 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11131130212 its reverse (21203113111), we get a palindrome (32334243323).

The spelling of 11131130212 in words is "eleven billion, one hundred thirty-one million, one hundred thirty thousand, two hundred twelve".