22211231331 has 4 divisors (see below), whose sum is σ = 29614975112. Its totient is φ = 14807487552.

The previous prime is 22211231321. The next prime is 22211231347. The reversal of 22211231331 is 13313211222.

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

It is not a de Polignac number, because 22211231331 - 2³⁰ = 21137489507 is a prime.

It is a super-2 number, since 2×22211231331² (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 = 22211231298 and 22211231307.

It is not an unprimeable number, because it can be changed into a prime (22211231311) 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, 3701871886 + ... + 3701871891.

It is an arithmetic number, because the mean of its divisors is an integer number (7403743778).

Almost surely, 2^22211231331 is an apocalyptic number.

22211231331 is a deficient number, since it is larger than the sum of its proper divisors (7403743781).

22211231331 is an equidigital number, since it uses as much as digits as its factorization.

22211231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403743780.

The product of its digits is 432, while the sum is 21.

Adding to 22211231331 its reverse (13313211222), we get a palindrome (35524442553).

The spelling of 22211231331 in words is "twenty-two billion, two hundred eleven million, two hundred thirty-one thousand, three hundred thirty-one".