110202211221 has 48 divisors (see below), whose sum is σ = 163021118400. Its totient is φ = 65911512576.

The previous prime is 110202211193. The next prime is 110202211237. The reversal of 110202211221 is 122112202011.

It is a de Polignac number, because none of the positive numbers 2^k-110202211221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 110202211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110202211321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9224470 + ... + 9236408.

It is an arithmetic number, because the mean of its divisors is an integer number (3396273300).

Almost surely, 2^110202211221 is an apocalyptic number.

It is an amenable number.

110202211221 is a deficient number, since it is larger than the sum of its proper divisors (52818907179).

110202211221 is a wasteful number, since it uses less digits than its factorization.

110202211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12146 (or 12067 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 110202211221 its reverse (122112202011), we get a palindrome (232314413232).

The spelling of 110202211221 in words is "one hundred ten billion, two hundred two million, two hundred eleven thousand, two hundred twenty-one".