120321645253 has 4 divisors (see below), whose sum is σ = 120516026560. Its totient is φ = 120127263948.

The previous prime is 120321645247. The next prime is 120321645277. The reversal of 120321645253 is 352546123021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120321645253 - 2⁹ = 120321644741 is a prime.

It is a super-3 number, since 3×120321645253³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120321645203) 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, 97189725 + ... + 97190962.

It is an arithmetic number, because the mean of its divisors is an integer number (30129006640).

Almost surely, 2^120321645253 is an apocalyptic number.

It is an amenable number.

120321645253 is a deficient number, since it is larger than the sum of its proper divisors (194381307).

120321645253 is an equidigital number, since it uses as much as digits as its factorization.

120321645253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194381306.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 120321645253 its reverse (352546123021), we get a palindrome (472867768274).

The spelling of 120321645253 in words is "one hundred twenty billion, three hundred twenty-one million, six hundred forty-five thousand, two hundred fifty-three".