2101201010101 has 4 divisors (see below), whose sum is σ = 2103635774592. Its totient is φ = 2098766245612.

The previous prime is 2101201010099. The next prime is 2101201010107. The reversal of 2101201010101 is 1010101021012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2101201010101 - 2¹ = 2101201010099 is a prime.

It is a Duffinian number.

2101201010101 is a modest number, since divided by 1010101 gives 21012 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101201010107) 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, 1217380951 + ... + 1217382676.

It is an arithmetic number, because the mean of its divisors is an integer number (525908943648).

Almost surely, 2^{2101201010101} is an apocalyptic number.

It is an amenable number.

2101201010101 is a deficient number, since it is larger than the sum of its proper divisors (2434764491).

2101201010101 is an equidigital number, since it uses as much as digits as its factorization.

2101201010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434764490.

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

Adding to 2101201010101 its reverse (1010101021012), we get a palindrome (3111302031113).

It can be divided in two parts, 210120 and 1010101, that added together give a palindrome (1220221).

The spelling of 2101201010101 in words is "two trillion, one hundred one billion, two hundred one million, ten thousand, one hundred one".