222010101001221 has 32 divisors (see below), whose sum is σ = 344631064659840. Its totient is φ = 125932855175424.

The previous prime is 222010101001189. The next prime is 222010101001223. The reversal of 222010101001221 is 122100101010222.

It is not a de Polignac number, because 222010101001221 - 2⁵ = 222010101001189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222010101001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222010101001223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4048739790 + ... + 4048794623.

It is an arithmetic number, because the mean of its divisors is an integer number (10769720770620).

Almost surely, 2^{222010101001221} is an apocalyptic number.

It is an amenable number.

222010101001221 is a deficient number, since it is larger than the sum of its proper divisors (122620963658619).

222010101001221 is a wasteful number, since it uses less digits than its factorization.

222010101001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8097534485.

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

Adding to 222010101001221 its reverse (122100101010222), we get a palindrome (344110202011443).

Subtracting from 222010101001221 its reverse (122100101010222), we obtain a palindrome (99909999990999).

The spelling of 222010101001221 in words is "two hundred twenty-two trillion, ten billion, one hundred one million, one thousand, two hundred twenty-one".