11220224031 has 8 divisors (see below), whose sum is σ = 16622554160. Its totient is φ = 7480149336.

The previous prime is 11220224017. The next prime is 11220224069. The reversal of 11220224031 is 13042202211.

It is a happy number.

It is not a de Polignac number, because 11220224031 - 2⁵ = 11220223999 is a prime.

It is a super-2 number, since 2×11220224031² (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 = 11220223995 and 11220224013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220224531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207781900 + ... + 207781953.

It is an arithmetic number, because the mean of its divisors is an integer number (2077819270).

Almost surely, 2^11220224031 is an apocalyptic number.

11220224031 is a deficient number, since it is larger than the sum of its proper divisors (5402330129).

11220224031 is an equidigital number, since it uses as much as digits as its factorization.

11220224031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415563862 (or 415563856 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11220224031 its reverse (13042202211), we get a palindrome (24262426242).

The spelling of 11220224031 in words is "eleven billion, two hundred twenty million, two hundred twenty-four thousand, thirty-one".