11222231131 has 4 divisors (see below), whose sum is σ = 11882362392. Its totient is φ = 10562099872.

The previous prime is 11222231107. The next prime is 11222231147. The reversal of 11222231131 is 13113222211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11222231131 - 2¹⁹ = 11221706843 is a prime.

It is a super-2 number, since 2×11222231131² (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 = 11222231099 and 11222231108.

It is not an unprimeable number, because it can be changed into a prime (11222234131) 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, 330065605 + ... + 330065638.

It is an arithmetic number, because the mean of its divisors is an integer number (2970590598).

Almost surely, 2^11222231131 is an apocalyptic number.

11222231131 is a deficient number, since it is larger than the sum of its proper divisors (660131261).

11222231131 is an equidigital number, since it uses as much as digits as its factorization.

11222231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660131260.

The product of its digits is 144, while the sum is 19.

Adding to 11222231131 its reverse (13113222211), we get a palindrome (24335453342).

The spelling of 11222231131 in words is "eleven billion, two hundred twenty-two million, two hundred thirty-one thousand, one hundred thirty-one".