2105421335 has 4 divisors (see below), whose sum is σ = 2526505608. Its totient is φ = 1684337064.

The previous prime is 2105421281. The next prime is 2105421347. The reversal of 2105421335 is 5331245012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2105421335 - 2¹⁰ = 2105420311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210542129 + ... + 210542138.

It is an arithmetic number, because the mean of its divisors is an integer number (631626402).

Almost surely, 2^2105421335 is an apocalyptic number.

2105421335 is a deficient number, since it is larger than the sum of its proper divisors (421084273).

2105421335 is an equidigital number, since it uses as much as digits as its factorization.

2105421335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421084272.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2105421335 is about 45884.8704367790. The cubic root of 2105421335 is about 1281.6801940383.

Adding to 2105421335 its reverse (5331245012), we get a palindrome (7436666347).

The spelling of 2105421335 in words is "two billion, one hundred five million, four hundred twenty-one thousand, three hundred thirty-five".