11312334021 has 16 divisors (see below), whose sum is σ = 15979469184. Its totient is φ = 7093883904.

The previous prime is 11312333993. The next prime is 11312334037. The reversal of 11312334021 is 12043321311.

It is not a de Polignac number, because 11312334021 - 2⁶ = 11312333957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312334041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28216 + ... + 153038.

It is an arithmetic number, because the mean of its divisors is an integer number (998716824).

Almost surely, 2^11312334021 is an apocalyptic number.

It is an amenable number.

11312334021 is a deficient number, since it is larger than the sum of its proper divisors (4667135163).

11312334021 is a wasteful number, since it uses less digits than its factorization.

11312334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126620.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11312334021 its reverse (12043321311), we get a palindrome (23355655332).

It can be divided in two parts, 113123340 and 21, that added together give a triangular number (113123361 = T₁₅₀₄₁).

The spelling of 11312334021 in words is "eleven billion, three hundred twelve million, three hundred thirty-four thousand, twenty-one".