210100020111101 has 2 divisors, whose sum is σ = 210100020111102. Its totient is φ = 210100020111100.

The previous prime is 210100020111083. The next prime is 210100020111127. The reversal of 210100020111101 is 101111020001012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105516058954201 + 104583961156900 = 10272101^2 + 10226630^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100020111101 - 2¹⁰ = 210100020110077 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 (210100020113101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050010055550 + 105050010055551.

It is an arithmetic number, because the mean of its divisors is an integer number (105050010055551).

Almost surely, 2^{210100020111101} is an apocalyptic number.

It is an amenable number.

210100020111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100020111101 is an equidigital number, since it uses as much as digits as its factorization.

210100020111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 210100020111101 its reverse (101111020001012), we get a palindrome (311211040112113).

The spelling of 210100020111101 in words is "two hundred ten trillion, one hundred billion, twenty million, one hundred eleven thousand, one hundred one".