53323420121 has 4 divisors (see below), whose sum is σ = 53409565200. Its totient is φ = 53237275044.

The previous prime is 53323420109. The next prime is 53323420159. The reversal of 53323420121 is 12102432335.

It is a happy number.

53323420121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53323420121 - 2¹⁸ = 53323157977 is a prime.

It is a super-3 number, since 3×53323420121³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53323420321) 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, 43071611 + ... + 43072848.

It is an arithmetic number, because the mean of its divisors is an integer number (13352391300).

Almost surely, 2^53323420121 is an apocalyptic number.

It is an amenable number.

53323420121 is a deficient number, since it is larger than the sum of its proper divisors (86145079).

53323420121 is an equidigital number, since it uses as much as digits as its factorization.

53323420121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86145078.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 53323420121 its reverse (12102432335), we get a palindrome (65425852456).

It can be divided in two parts, 533234 and 20121, that added together give a palindrome (553355).

The spelling of 53323420121 in words is "fifty-three billion, three hundred twenty-three million, four hundred twenty thousand, one hundred twenty-one".