2221113111901 has 2 divisors, whose sum is σ = 2221113111902. Its totient is φ = 2221113111900.

The previous prime is 2221113111887. The next prime is 2221113112039. The reversal of 2221113111901 is 1091113111222.

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., 1602821832676 + 618291279225 = 1266026^2 + 786315^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221113111901 - 2²⁵ = 2221079557469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221113111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110556555950 + 1110556555951.

It is an arithmetic number, because the mean of its divisors is an integer number (1110556555951).

Almost surely, 2^{2221113111901} is an apocalyptic number.

It is an amenable number.

2221113111901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221113111901 is an equidigital number, since it uses as much as digits as its factorization.

2221113111901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 2221113111901 in words is "two trillion, two hundred twenty-one billion, one hundred thirteen million, one hundred eleven thousand, nine hundred one".