2121253235 has 4 divisors (see below), whose sum is σ = 2545503888. Its totient is φ = 1697002584.

The previous prime is 2121253181. The next prime is 2121253247. The reversal of 2121253235 is 5323521212.

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 2121253235 - 2⁶ = 2121253171 is a prime.

It is a Duffinian 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, 212125319 + ... + 212125328.

It is an arithmetic number, because the mean of its divisors is an integer number (636375972).

Almost surely, 2^2121253235 is an apocalyptic number.

2121253235 is a deficient number, since it is larger than the sum of its proper divisors (424250653).

2121253235 is an equidigital number, since it uses as much as digits as its factorization.

2121253235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424250652.

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

The square root of 2121253235 is about 46057.0649846470. The cubic root of 2121253235 is about 1284.8847439107.

Adding to 2121253235 its reverse (5323521212), we get a palindrome (7444774447).

It can be divided in two parts, 21212 and 53235, that added together give a palindrome (74447).

The spelling of 2121253235 in words is "two billion, one hundred twenty-one million, two hundred fifty-three thousand, two hundred thirty-five".