2121120253 has 8 divisors (see below), whose sum is σ = 2426139072. Its totient is φ = 1816601856.

The previous prime is 2121120229. The next prime is 2121120299. The reversal of 2121120253 is 3520211212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121120253 is a prime.

It is a super-2 number, since 2×2121120253² = 8998302255373568018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121120253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121120203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115975 + ... + 133012.

It is an arithmetic number, because the mean of its divisors is an integer number (303267384).

Almost surely, 2^2121120253 is an apocalyptic number.

It is an amenable number.

2121120253 is a deficient number, since it is larger than the sum of its proper divisors (305018819).

2121120253 is a wasteful number, since it uses less digits than its factorization.

2121120253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250211.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2121120253 is about 46055.6212964281. The cubic root of 2121120253 is about 1284.8578934133.

Adding to 2121120253 its reverse (3520211212), we get a palindrome (5641331465).

The spelling of 2121120253 in words is "two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred fifty-three".