20212201113901 has 2 divisors, whose sum is σ = 20212201113902. Its totient is φ = 20212201113900.

The previous prime is 20212201113899. The next prime is 20212201113919. The reversal of 20212201113901 is 10931110221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11202442470025 + 9009758643876 = 3347005^2 + 3001626^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212201113901 - 2¹ = 20212201113899 is a prime.

Together with 20212201113899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212201113931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106100556950 + 10106100556951.

It is an arithmetic number, because the mean of its divisors is an integer number (10106100556951).

Almost surely, 2^{20212201113901} is an apocalyptic number.

It is an amenable number.

20212201113901 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212201113901 is an equidigital number, since it uses as much as digits as its factorization.

20212201113901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 20212201113901 in words is "twenty trillion, two hundred twelve billion, two hundred one million, one hundred thirteen thousand, nine hundred one".