11312223012 has 36 divisors (see below), whose sum is σ = 29203190016. Its totient is φ = 3690511920.

The previous prime is 11312223001. The next prime is 11312223029. The reversal of 11312223012 is 21032221311.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3341164 + ... + 3344547.

Almost surely, 2^11312223012 is an apocalyptic number.

11312223012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11312223012 is an abundant number, since it is smaller than the sum of its proper divisors (17890967004).

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

11312223012 is a wasteful number, since it uses less digits than its factorization.

11312223012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685768 (or 6685763 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11312223012 its reverse (21032221311), we get a palindrome (32344444323).

The spelling of 11312223012 in words is "eleven billion, three hundred twelve million, two hundred twenty-three thousand, twelve".