222011022111121 has 2 divisors, whose sum is σ = 222011022111122. Its totient is φ = 222011022111120.

The previous prime is 222011022111103. The next prime is 222011022111149. The reversal of 222011022111121 is 121111220110222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131937844416400 + 90073177694721 = 11486420^2 + 9490689^2 .

It is a cyclic number.

It is not a de Polignac number, because 222011022111121 - 2¹³ = 222011022102929 is a prime.

It is not a weakly prime, because it can be changed into another prime (222011022114121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111005511055560 + 111005511055561.

It is an arithmetic number, because the mean of its divisors is an integer number (111005511055561).

Almost surely, 2^{222011022111121} is an apocalyptic number.

It is an amenable number.

222011022111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222011022111121 is an equidigital number, since it uses as much as digits as its factorization.

222011022111121 is an evil number, because the sum of its binary digits is even.

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

Adding to 222011022111121 its reverse (121111220110222), we get a palindrome (343122242221343).

The spelling of 222011022111121 in words is "two hundred twenty-two trillion, eleven billion, twenty-two million, one hundred eleven thousand, one hundred twenty-one".