11312001012 has 96 divisors (see below), whose sum is σ = 28913016832. Its totient is φ = 3421097856.

The previous prime is 11312001007. The next prime is 11312001037. The reversal of 11312001012 is 21010021311.

It is a super-2 number, since 2×11312001012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6343473 + ... + 6345255.

Almost surely, 2^11312001012 is an apocalyptic number.

11312001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11312001012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14456508416).

11312001012 is an abundant number, since it is smaller than the sum of its proper divisors (17601015820).

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

11312001012 is a wasteful number, since it uses less digits than its factorization.

11312001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477 (or 2475 counting only the distinct ones).

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

Adding to 11312001012 its reverse (21010021311), we get a palindrome (32322022323).

The spelling of 11312001012 in words is "eleven billion, three hundred twelve million, one thousand, twelve".