11220210331 has 24 divisors (see below), whose sum is σ = 12622795920. Its totient is φ = 9963275520.

The previous prime is 11220210329. The next prime is 11220210367. The reversal of 11220210331 is 13301202211.

It is not a de Polignac number, because 11220210331 - 2¹ = 11220210329 is a prime.

It is a super-2 number, since 2×11220210331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220210431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 887551 + ... + 900103.

It is an arithmetic number, because the mean of its divisors is an integer number (525949830).

Almost surely, 2^11220210331 is an apocalyptic number.

11220210331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11220210331 is a deficient number, since it is larger than the sum of its proper divisors (1402585589).

11220210331 is a wasteful number, since it uses less digits than its factorization.

11220210331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12747 (or 12736 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11220210331 its reverse (13301202211), we get a palindrome (24521412542).

The spelling of 11220210331 in words is "eleven billion, two hundred twenty million, two hundred ten thousand, three hundred thirty-one".