235351221 has 16 divisors (see below), whose sum is σ = 359065728. Its totient is φ = 134323200.

The previous prime is 235351199. The next prime is 235351229. The reversal of 235351221 is 122153532.

It is a happy number.

235351221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 235351221 - 2²⁵ = 201796789 is a prime.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 235351191 and 235351200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235351229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12141 + ... + 24861.

It is an arithmetic number, because the mean of its divisors is an integer number (22441608).

Almost surely, 2^235351221 is an apocalyptic number.

235351221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

235351221 is a deficient number, since it is larger than the sum of its proper divisors (123714507).

235351221 is a wasteful number, since it uses less digits than its factorization.

235351221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13612.

The product of its digits is 1800, while the sum is 24.

The square root of 235351221 is about 15341.1610056084. The cubic root of 235351221 is about 617.4078570025.

The spelling of 235351221 in words is "two hundred thirty-five million, three hundred fifty-one thousand, two hundred twenty-one".