2221235113121 has 2 divisors, whose sum is σ = 2221235113122. Its totient is φ = 2221235113120.

The previous prime is 2221235113087. The next prime is 2221235113133. The reversal of 2221235113121 is 1213115321222.

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., 1640164314721 + 581070798400 = 1280689^2 + 762280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221235113121 - 2⁶ = 2221235113057 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221235119121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110617556560 + 1110617556561.

It is an arithmetic number, because the mean of its divisors is an integer number (1110617556561).

Almost surely, 2^{2221235113121} is an apocalyptic number.

It is an amenable number.

2221235113121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221235113121 is an equidigital number, since it uses as much as digits as its factorization.

2221235113121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The spelling of 2221235113121 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-five million, one hundred thirteen thousand, one hundred twenty-one".