235541023221 has 64 divisors (see below), whose sum is σ = 391702118400. Its totient is φ = 122841847296.

The previous prime is 235541023217. The next prime is 235541023241. The reversal of 235541023221 is 122320145532.

It is not a de Polignac number, because 235541023221 - 2² = 235541023217 is a prime.

It is a super-2 number, since 2×235541023221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235541023241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5265676 + ... + 5310218.

It is an arithmetic number, because the mean of its divisors is an integer number (6120345600).

Almost surely, 2^235541023221 is an apocalyptic number.

235541023221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

235541023221 is a deficient number, since it is larger than the sum of its proper divisors (156161095179).

235541023221 is a wasteful number, since it uses less digits than its factorization.

235541023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45058.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 235541023221 its reverse (122320145532), we get a palindrome (357861168753).

The spelling of 235541023221 in words is "two hundred thirty-five billion, five hundred forty-one million, twenty-three thousand, two hundred twenty-one".