2121355235 has 8 divisors (see below), whose sum is σ = 2546555760. Its totient is φ = 1696464544.

The previous prime is 2121355231. The next prime is 2121355241. The reversal of 2121355235 is 5325531212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121355235 - 2² = 2121355231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121355198 and 2121355207.

It is not an unprimeable number, because it can be changed into a prime (2121355231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62117 + ... + 90006.

It is an arithmetic number, because the mean of its divisors is an integer number (318319470).

Almost surely, 2^2121355235 is an apocalyptic number.

2121355235 is a deficient number, since it is larger than the sum of its proper divisors (425200525).

2121355235 is a wasteful number, since it uses less digits than its factorization.

2121355235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154917.

The product of its digits is 9000, while the sum is 29.

The square root of 2121355235 is about 46058.1722933075. The cubic root of 2121355235 is about 1284.9053380483.

Adding to 2121355235 its reverse (5325531212), we get a palindrome (7446886447).

The spelling of 2121355235 in words is "two billion, one hundred twenty-one million, three hundred fifty-five thousand, two hundred thirty-five".