2121101413 has 4 divisors (see below), whose sum is σ = 2132206848. Its totient is φ = 2109995980.

The previous prime is 2121101401. The next prime is 2121101429. The reversal of 2121101413 is 3141011212.

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 a de Polignac number, because none of the positive numbers 2^k-2121101413 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 (2121101473) 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, 5552431 + ... + 5552812.

It is an arithmetic number, because the mean of its divisors is an integer number (533051712).

Almost surely, 2^2121101413 is an apocalyptic number.

It is an amenable number.

2121101413 is a deficient number, since it is larger than the sum of its proper divisors (11105435).

2121101413 is a wasteful number, since it uses less digits than its factorization.

2121101413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105434.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2121101413 is about 46055.4167606808. The cubic root of 2121101413 is about 1284.8540893237.

Adding to 2121101413 its reverse (3141011212), we get a palindrome (5262112625).

The spelling of 2121101413 in words is "two billion, one hundred twenty-one million, one hundred one thousand, four hundred thirteen".