1111110001901 has 2 divisors, whose sum is σ = 1111110001902. Its totient is φ = 1111110001900.

The previous prime is 1111110001889. The next prime is 1111110001921. The reversal of 1111110001901 is 1091000111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 781501968676 + 329608033225 = 884026^2 + 574115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111110001901 is a prime.

It is a super-2 number, since 2×1111110001901² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111110001901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111110001921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555555000950 + 555555000951.

It is an arithmetic number, because the mean of its divisors is an integer number (555555000951).

Almost surely, 2^{1111110001901} is an apocalyptic number.

It is an amenable number.

1111110001901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111110001901 is an equidigital number, since it uses as much as digits as its factorization.

1111110001901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 1111110001901 in words is "one trillion, one hundred eleven billion, one hundred ten million, one thousand, nine hundred one".