222211201111021 has 2 divisors, whose sum is σ = 222211201111022. Its totient is φ = 222211201111020.

The previous prime is 222211201110949. The next prime is 222211201111027. The reversal of 222211201111021 is 120111102112222.

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., 126769809824100 + 95441391286921 = 11259210^2 + 9769411^2 .

It is a cyclic number.

It is not a de Polignac number, because 222211201111021 - 2³⁷ = 222073762157549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222211201111021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222211201111027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105600555510 + 111105600555511.

It is an arithmetic number, because the mean of its divisors is an integer number (111105600555511).

Almost surely, 2^{222211201111021} is an apocalyptic number.

It is an amenable number.

222211201111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222211201111021 is an equidigital number, since it uses as much as digits as its factorization.

222211201111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222211201111021 its reverse (120111102112222), we get a palindrome (342322303223243).

The spelling of 222211201111021 in words is "two hundred twenty-two trillion, two hundred eleven billion, two hundred one million, one hundred eleven thousand, twenty-one".