110212231221 has 24 divisors (see below), whose sum is σ = 162226484160. Its totient is φ = 72081000576.

The previous prime is 110212231201. The next prime is 110212231223. The reversal of 110212231221 is 122132212011.

110212231221 is a `hidden beast` number, since 1 + 1 + 0 + 212 + 231 + 221 = 666.

It is not a de Polignac number, because 110212231221 - 2⁵ = 110212231189 is a prime.

It is a super-2 number, since 2×110212231221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 110212231194 and 110212231203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110212231223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45501 + ... + 471693.

It is an arithmetic number, because the mean of its divisors is an integer number (6759436840).

Almost surely, 2^110212231221 is an apocalyptic number.

It is an amenable number.

110212231221 is a deficient number, since it is larger than the sum of its proper divisors (52014252939).

110212231221 is a wasteful number, since it uses less digits than its factorization.

110212231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426745 (or 426742 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 110212231221 its reverse (122132212011), we get a palindrome (232344443232).

The spelling of 110212231221 in words is "one hundred ten billion, two hundred twelve million, two hundred thirty-one thousand, two hundred twenty-one".