2121430135 has 16 divisors (see below), whose sum is σ = 2792672640. Its totient is φ = 1534231840.

The previous prime is 2121430121. The next prime is 2121430141. The reversal of 2121430135 is 5310341212.

It is a happy number.

It is not a de Polignac number, because 2121430135 - 2⁹ = 2121429623 is a prime.

It is a super-2 number, since 2×2121430135² = 9000931635372236450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97897 + ... + 117586.

It is an arithmetic number, because the mean of its divisors is an integer number (174542040).

Almost surely, 2^2121430135 is an apocalyptic number.

2121430135 is a deficient number, since it is larger than the sum of its proper divisors (671242505).

2121430135 is a wasteful number, since it uses less digits than its factorization.

2121430135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215678.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2121430135 is about 46058.9853883040. The cubic root of 2121430135 is about 1284.9204601859.

Adding to 2121430135 its reverse (5310341212), we get a palindrome (7431771347).

The spelling of 2121430135 in words is "two billion, one hundred twenty-one million, four hundred thirty thousand, one hundred thirty-five".