11221100031 has 8 divisors (see below), whose sum is σ = 14970771760. Its totient is φ = 7476080832.

The previous prime is 11221100017. The next prime is 11221100069. The reversal of 11221100031 is 13000112211.

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

It is not a de Polignac number, because 11221100031 - 2²² = 11216905727 is a prime.

It is a super-2 number, since 2×11221100031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221100081) 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, 1157500 + ... + 1167153.

It is an arithmetic number, because the mean of its divisors is an integer number (1871346470).

Almost surely, 2^11221100031 is an apocalyptic number.

11221100031 is a deficient number, since it is larger than the sum of its proper divisors (3749671729).

11221100031 is a wasteful number, since it uses less digits than its factorization.

11221100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326265.

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

Adding to 11221100031 its reverse (13000112211), we get a palindrome (24221212242).

The spelling of 11221100031 in words is "eleven billion, two hundred twenty-one million, one hundred thousand, thirty-one".