22031101121 has 2 divisors, whose sum is σ = 22031101122. Its totient is φ = 22031101120.

The previous prime is 22031101117. The next prime is 22031101187. The reversal of 22031101121 is 12110113022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21989627521 + 41473600 = 148289^2 + 6440^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031101121 - 2² = 22031101117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22031101096 and 22031101105.

It is not a weakly prime, because it can be changed into another prime (22031101921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015550560 + 11015550561.

It is an arithmetic number, because the mean of its divisors is an integer number (11015550561).

Almost surely, 2^22031101121 is an apocalyptic number.

It is an amenable number.

22031101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031101121 is an equidigital number, since it uses as much as digits as its factorization.

22031101121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 22031101121 its reverse (12110113022), we get a palindrome (34141214143).

The spelling of 22031101121 in words is "twenty-two billion, thirty-one million, one hundred one thousand, one hundred twenty-one".