210100121000101 has 4 divisors (see below), whose sum is σ = 214064274226572. Its totient is φ = 206135967773632.

The previous prime is 210100121000089. The next prime is 210100121000113. The reversal of 210100121000101 is 101000121001012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (210100121000089) and next prime (210100121000113).

It can be written as a sum of positive squares in 2 ways, for example, as 141176933604100 + 68923187396001 = 11881790^2 + 8301999^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100121000101 - 2⁷ = 210100120999973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100121000131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982076613156 + ... + 1982076613261.

It is an arithmetic number, because the mean of its divisors is an integer number (53516068556643).

Almost surely, 2^{210100121000101} is an apocalyptic number.

It is an amenable number.

210100121000101 is a deficient number, since it is larger than the sum of its proper divisors (3964153226471).

210100121000101 is an equidigital number, since it uses as much as digits as its factorization.

210100121000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964153226470.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 210100121000101 its reverse (101000121001012), we get a palindrome (311100242001113).

The spelling of 210100121000101 in words is "two hundred ten trillion, one hundred billion, one hundred twenty-one million, one hundred one", and thus it is an aban number.