222121113101 has 2 divisors, whose sum is σ = 222121113102. Its totient is φ = 222121113100.

The previous prime is 222121113079. The next prime is 222121113113. The reversal of 222121113101 is 101311121222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203468655625 + 18652457476 = 451075^2 + 136574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222121113101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222121113101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121113001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060556550 + 111060556551.

It is an arithmetic number, because the mean of its divisors is an integer number (111060556551).

Almost surely, 2^222121113101 is an apocalyptic number.

It is an amenable number.

222121113101 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121113101 is an equidigital number, since it uses as much as digits as its factorization.

222121113101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 222121113101 its reverse (101311121222), we get a palindrome (323432234323).

The spelling of 222121113101 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred thirteen thousand, one hundred one".