2101413421 has 4 divisors (see below), whose sum is σ = 2101585500. Its totient is φ = 2101241344.

The previous prime is 2101413361. The next prime is 2101413449. The reversal of 2101413421 is 1243141012.

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 1114825321 + 986588100 = 33389^2 + 31410^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101413421 - 2¹¹ = 2101411373 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 (2101413451) 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, 66196 + ... + 92653.

It is an arithmetic number, because the mean of its divisors is an integer number (525396375).

Almost surely, 2^2101413421 is an apocalyptic number.

It is an amenable number.

2101413421 is a deficient number, since it is larger than the sum of its proper divisors (172079).

2101413421 is a wasteful number, since it uses less digits than its factorization.

2101413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172078.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2101413421 is about 45841.1760429420. The cubic root of 2101413421 is about 1280.8664017428.

Adding to 2101413421 its reverse (1243141012), we get a palindrome (3344554433).

The spelling of 2101413421 in words is "two billion, one hundred one million, four hundred thirteen thousand, four hundred twenty-one".