53220121 has 16 divisors (see below), whose sum is σ = 58210560. Its totient is φ = 48487680.

The previous prime is 53220119. The next prime is 53220127. The reversal of 53220121 is 12102235.

It is not a de Polignac number, because 53220121 - 2¹ = 53220119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53220095 and 53220104.

It is not an unprimeable number, because it can be changed into a prime (53220127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53985 + ... + 54961.

It is an arithmetic number, because the mean of its divisors is an integer number (3638160).

Almost surely, 2^53220121 is an apocalyptic number.

It is an amenable number.

53220121 is a deficient number, since it is larger than the sum of its proper divisors (4990439).

53220121 is a wasteful number, since it uses less digits than its factorization.

53220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 53220121 is about 7295.2121970509. The cubic root of 53220121 is about 376.1478806608.

Adding to 53220121 its reverse (12102235), we get a palindrome (65322356).

The spelling of 53220121 in words is "fifty-three million, two hundred twenty thousand, one hundred twenty-one".