111130133123221 has 2 divisors, whose sum is σ = 111130133123222. Its totient is φ = 111130133123220.

The previous prime is 111130133123213. The next prime is 111130133123227. The reversal of 111130133123221 is 122321331031111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105763432698225 + 5366700424996 = 10284135^2 + 2316614^2 .

It is a cyclic number.

It is not a de Polignac number, because 111130133123221 - 2³ = 111130133123213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111130133123227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55565066561610 + 55565066561611.

It is an arithmetic number, because the mean of its divisors is an integer number (55565066561611).

Almost surely, 2^{111130133123221} is an apocalyptic number.

It is an amenable number.

111130133123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

111130133123221 is an equidigital number, since it uses as much as digits as its factorization.

111130133123221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 111130133123221 its reverse (122321331031111), we get a palindrome (233451464154332).

The spelling of 111130133123221 in words is "one hundred eleven trillion, one hundred thirty billion, one hundred thirty-three million, one hundred twenty-three thousand, two hundred twenty-one".