2100010110101 has 4 divisors (see below), whose sum is σ = 2100014390412. Its totient is φ = 2100005829792.

The previous prime is 2100010110089. The next prime is 2100010110137. The reversal of 2100010110101 is 1010110100012.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1649359707076 + 450650403025 = 1284274^2 + 671305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100010110101 - 2¹⁴ = 2100010093717 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 (2100010110001) 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, 1292246 + ... + 2422791.

It is an arithmetic number, because the mean of its divisors is an integer number (525003597603).

Almost surely, 2^{2100010110101} is an apocalyptic number.

It is an amenable number.

2100010110101 is a deficient number, since it is larger than the sum of its proper divisors (4280311).

2100010110101 is an equidigital number, since it uses as much as digits as its factorization.

2100010110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280310.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 2100010110101 its reverse (1010110100012), we get a palindrome (3110120210113).

The spelling of 2100010110101 in words is "two trillion, one hundred billion, ten million, one hundred ten thousand, one hundred one".