11231269812 has 90 divisors (see below), whose sum is σ = 34154399202. Its totient is φ = 3208929696.

The previous prime is 11231269811. The next prime is 11231269813. The reversal of 11231269812 is 21896213211.

It is an interprime number because it is at equal distance from previous prime (11231269811) and next prime (11231269813).

It can be written as a sum of positive squares in only one way, i.e., 11042647056 + 188622756 = 105084^2 + 13734^2 .

It is a super-2 number, since 2×11231269812² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231269811) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 337843 + ... + 369594.

Almost surely, 2^11231269812 is an apocalyptic number.

11231269812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11231269812 is an abundant number, since it is smaller than the sum of its proper divisors (22923129390).

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

11231269812 is a wasteful number, since it uses less digits than its factorization.

11231269812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707467 (or 707449 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The spelling of 11231269812 in words is "eleven billion, two hundred thirty-one million, two hundred sixty-nine thousand, eight hundred twelve".