11131021012 has 12 divisors (see below), whose sum is σ = 19580217076. Its totient is φ = 5536673280.

The previous prime is 11131020991. The next prime is 11131021037. The reversal of 11131021012 is 21012013111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6330748356 + 4800272656 = 79566^2 + 69284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11131020983 and 11131021001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7208439 + ... + 7209982.

Almost surely, 2^11131021012 is an apocalyptic number.

It is an amenable number.

11131021012 is a deficient number, since it is larger than the sum of its proper divisors (8449196064).

11131021012 is a wasteful number, since it uses less digits than its factorization.

11131021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14418618 (or 14418616 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11131021012 its reverse (21012013111), we get a palindrome (32143034123).

The spelling of 11131021012 in words is "eleven billion, one hundred thirty-one million, twenty-one thousand, twelve".