2122434521 has 4 divisors (see below), whose sum is σ = 2122590372. Its totient is φ = 2122278672.

The previous prime is 2122434497. The next prime is 2122434557. The reversal of 2122434521 is 1254342212.

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 802928896 + 1319505625 = 28336^2 + 36325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122434521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122430521) 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, 55310 + ... + 85463.

It is an arithmetic number, because the mean of its divisors is an integer number (530647593).

Almost surely, 2^2122434521 is an apocalyptic number.

It is an amenable number.

2122434521 is a deficient number, since it is larger than the sum of its proper divisors (155851).

2122434521 is a wasteful number, since it uses less digits than its factorization.

2122434521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155850.

The product of its digits is 3840, while the sum is 26.

The square root of 2122434521 is about 46069.8873560594. The cubic root of 2122434521 is about 1285.1232090271.

Adding to 2122434521 its reverse (1254342212), we get a palindrome (3376776733).

The spelling of 2122434521 in words is "two billion, one hundred twenty-two million, four hundred thirty-four thousand, five hundred twenty-one".