221021102112212 has 24 divisors (see below), whose sum is σ = 387495594259200. Its totient is φ = 110308210671456.

The previous prime is 221021102112193. The next prime is 221021102112221. The reversal of 221021102112212 is 212211201120122.

221021102112212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10409168 + ... + 23460455.

It is an arithmetic number, because the mean of its divisors is an integer number (16145649760800).

Almost surely, 2^{221021102112212} is an apocalyptic number.

It is an amenable number.

221021102112212 is a deficient number, since it is larger than the sum of its proper divisors (166474492146988).

221021102112212 is a wasteful number, since it uses less digits than its factorization.

221021102112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33872615 (or 33872613 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221021102112212 its reverse (212211201120122), we get a palindrome (433232303232334).

The spelling of 221021102112212 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred two million, one hundred twelve thousand, two hundred twelve".