2101101212101 has 4 divisors (see below), whose sum is σ = 2101760487712. Its totient is φ = 2100441936492.

The previous prime is 2101101212059. The next prime is 2101101212209. The reversal of 2101101212101 is 1012121011012.

It is a happy number.

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 2101101212101 - 2¹¹ = 2101101210053 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 (2101101212701) 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, 329633025 + ... + 329639398.

It is an arithmetic number, because the mean of its divisors is an integer number (525440121928).

Almost surely, 2^{2101101212101} is an apocalyptic number.

It is an amenable number.

2101101212101 is a deficient number, since it is larger than the sum of its proper divisors (659275611).

2101101212101 is an equidigital number, since it uses as much as digits as its factorization.

2101101212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659275610.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2101101212101 its reverse (1012121011012), we get a palindrome (3113222223113).

The spelling of 2101101212101 in words is "two trillion, one hundred one billion, one hundred one million, two hundred twelve thousand, one hundred one".