20000011901 has 2 divisors, whose sum is σ = 20000011902. Its totient is φ = 20000011900.

The previous prime is 20000011883. The next prime is 20000011921. The reversal of 20000011901 is 10911000002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10065105625 + 9934906276 = 100325^2 + 99674^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000011901 - 2²⁶ = 19932903037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000011921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000005950 + 10000005951.

It is an arithmetic number, because the mean of its divisors is an integer number (10000005951).

Almost surely, 2^20000011901 is an apocalyptic number.

It is an amenable number.

20000011901 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000011901 is an equidigital number, since it uses as much as digits as its factorization.

20000011901 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 14.

Adding to 20000011901 its reverse (10911000002), we get a palindrome (30911011903).

The spelling of 20000011901 in words is "twenty billion, eleven thousand, nine hundred one".