11220002031 has 8 divisors (see below), whose sum is σ = 17097145984. Its totient is φ = 6411429720.

The previous prime is 11220001981. The next prime is 11220002041. The reversal of 11220002031 is 13020002211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11220002031 - 2⁶ = 11220001967 is a prime.

It is a super-2 number, since 2×11220002031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220001998 and 11220002016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220002041) 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 7 ways as a sum of consecutive naturals, for example, 267142885 + ... + 267142926.

It is an arithmetic number, because the mean of its divisors is an integer number (2137143248).

Almost surely, 2^11220002031 is an apocalyptic number.

11220002031 is a deficient number, since it is larger than the sum of its proper divisors (5877143953).

11220002031 is an equidigital number, since it uses as much as digits as its factorization.

11220002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534285821.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 11220002031 its reverse (13020002211), we get a palindrome (24240004242).

The spelling of 11220002031 in words is "eleven billion, two hundred twenty million, two thousand, thirty-one".