11111220002331 has 32 divisors (see below), whose sum is σ = 16625039976000. Its totient is φ = 7333700774400.

The previous prime is 11111220002321. The next prime is 11111220002347. The reversal of 11111220002331 is 13320002211111.

11111220002331 is a `hidden beast` number, since 1 + 1 + 111 + 220 + 0 + 0 + 2 + 331 = 666.

It is not a de Polignac number, because 11111220002331 - 2¹³ = 11111219994139 is a prime.

It is a super-2 number, since 2×11111220002331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11111220002321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49237945 + ... + 49463093.

It is an arithmetic number, because the mean of its divisors is an integer number (519532499250).

Almost surely, 2^{11111220002331} is an apocalyptic number.

11111220002331 is a deficient number, since it is larger than the sum of its proper divisors (5513819973669).

11111220002331 is a wasteful number, since it uses less digits than its factorization.

11111220002331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243356 (or 243350 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11111220002331 its reverse (13320002211111), we get a palindrome (24431222213442).

The spelling of 11111220002331 in words is "eleven trillion, one hundred eleven billion, two hundred twenty million, two thousand, three hundred thirty-one".