2122141405 has 4 divisors (see below), whose sum is σ = 2546569692. Its totient is φ = 1697713120.

The previous prime is 2122141403. The next prime is 2122141421. The reversal of 2122141405 is 5041412212.

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 668015716 + 1454125689 = 25846^2 + 38133^2 .

It is not a de Polignac number, because 2122141405 - 2¹ = 2122141403 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 (2122141403) 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, 212214136 + ... + 212214145.

It is an arithmetic number, because the mean of its divisors is an integer number (636642423).

Almost surely, 2^2122141405 is an apocalyptic number.

It is an amenable number.

2122141405 is a deficient number, since it is larger than the sum of its proper divisors (424428287).

2122141405 is an equidigital number, since it uses as much as digits as its factorization.

2122141405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424428286.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2122141405 is about 46066.7060359214. The cubic root of 2122141405 is about 1285.0640462256.

Adding to 2122141405 its reverse (5041412212), we get a palindrome (7163553617).

It can be divided in two parts, 21221 and 41405, that added together give a palindrome (62626).

The spelling of 2122141405 in words is "two billion, one hundred twenty-two million, one hundred forty-one thousand, four hundred five".