11111101012331 has 16 divisors (see below), whose sum is σ = 11704870718208. Its totient is φ = 10532698176000.

The previous prime is 11111101012301. The next prime is 11111101012421. The reversal of 11111101012331 is 13321010111111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11111101012331 - 2⁶ = 11111101012267 is a prime.

It is a super-2 number, since 2×11111101012331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111101012301) 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, 4466570 + ... + 6494031.

It is an arithmetic number, because the mean of its divisors is an integer number (731554419888).

Almost surely, 2^{11111101012331} is an apocalyptic number.

11111101012331 is a deficient number, since it is larger than the sum of its proper divisors (593769705877).

11111101012331 is a wasteful number, since it uses less digits than its factorization.

11111101012331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10961302.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 11111101012331 its reverse (13321010111111), we get a palindrome (24432111123442).

The spelling of 11111101012331 in words is "eleven trillion, one hundred eleven billion, one hundred one million, twelve thousand, three hundred thirty-one".