11222120231 has 16 divisors (see below), whose sum is σ = 12956557824. Its totient is φ = 9520996704.

The previous prime is 11222120183. The next prime is 11222120243. The reversal of 11222120231 is 13202122211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222120231 is a prime.

It is a super-2 number, since 2×11222120231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222120131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254486 + ... + 295308.

It is an arithmetic number, because the mean of its divisors is an integer number (809784864).

Almost surely, 2^11222120231 is an apocalyptic number.

11222120231 is a deficient number, since it is larger than the sum of its proper divisors (1734437593).

11222120231 is a wasteful number, since it uses less digits than its factorization.

11222120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41230.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11222120231 its reverse (13202122211), we get a palindrome (24424242442).

The spelling of 11222120231 in words is "eleven billion, two hundred twenty-two million, one hundred twenty thousand, two hundred thirty-one".