221022121003321 has 48 divisors (see below), whose sum is σ = 254412085294080. Its totient is φ = 191506152499200.

The previous prime is 221022121003309. The next prime is 221022121003361. The reversal of 221022121003321 is 123300121220122.

It is a de Polignac number, because none of the positive numbers 2^k-221022121003321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221022121003292 and 221022121003301.

It is not an unprimeable number, because it can be changed into a prime (221022121003361) 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, 897024181 + ... + 897270541.

It is an arithmetic number, because the mean of its divisors is an integer number (5300251776960).

Almost surely, 2^{221022121003321} is an apocalyptic number.

It is an amenable number.

221022121003321 is a deficient number, since it is larger than the sum of its proper divisors (33389964290759).

221022121003321 is a wasteful number, since it uses less digits than its factorization.

221022121003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247558 (or 247547 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221022121003321 its reverse (123300121220122), we get a palindrome (344322242223443).

The spelling of 221022121003321 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred twenty-one million, three thousand, three hundred twenty-one".