11220444031 has 4 divisors (see below), whose sum is σ = 11308794112. Its totient is φ = 11132093952.

The previous prime is 11220443963. The next prime is 11220444043. The reversal of 11220444031 is 13044402211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13044402211 = 1861 ⋅7009351.

It is a cyclic number.

It is not a de Polignac number, because 11220444031 - 2⁹ = 11220443519 is a prime.

It is a super-2 number, since 2×11220444031² (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 = 11220443993 and 11220444011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220444331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44174850 + ... + 44175103.

It is an arithmetic number, because the mean of its divisors is an integer number (2827198528).

Almost surely, 2^11220444031 is an apocalyptic number.

11220444031 is a deficient number, since it is larger than the sum of its proper divisors (88350081).

11220444031 is an equidigital number, since it uses as much as digits as its factorization.

11220444031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88350080.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11220444031 its reverse (13044402211), we get a palindrome (24264846242).

The spelling of 11220444031 in words is "eleven billion, two hundred twenty million, four hundred forty-four thousand, thirty-one".