10201111901 has 2 divisors, whose sum is σ = 10201111902. Its totient is φ = 10201111900.

The previous prime is 10201111883. The next prime is 10201111957. The reversal of 10201111901 is 10911110201.

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., 9940289401 + 260822500 = 99701^2 + 16150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10201111901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10201111901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10201111981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100555950 + 5100555951.

It is an arithmetic number, because the mean of its divisors is an integer number (5100555951).

Almost surely, 2^10201111901 is an apocalyptic number.

It is an amenable number.

10201111901 is a deficient number, since it is larger than the sum of its proper divisors (1).

10201111901 is an equidigital number, since it uses as much as digits as its factorization.

10201111901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 10201111901 in words is "ten billion, two hundred one million, one hundred eleven thousand, nine hundred one".