1000000002101 has 4 divisors (see below), whose sum is σ = 1000015353600. Its totient is φ = 999984650604.

The previous prime is 1000000002059. The next prime is 1000000002119. The reversal of 1000000002101 is 1012000000001.

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 1000000002101 - 2³⁸ = 725122095157 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 (1000000002901) 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, 7577621 + ... + 7708458.

It is an arithmetic number, because the mean of its divisors is an integer number (250003838400).

Almost surely, 2^{1000000002101} is an apocalyptic number.

It is an amenable number.

1000000002101 is a deficient number, since it is larger than the sum of its proper divisors (15351499).

1000000002101 is an equidigital number, since it uses as much as digits as its factorization.

1000000002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15351498.

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 1000000002101 its reverse (1012000000001), we get a palindrome (2012000002102).

The spelling of 1000000002101 in words is "one trillion, two thousand, one hundred one".