22220022022221 has 16 divisors (see below), whose sum is σ = 30381546199680. Its totient is φ = 14440611440640.

The previous prime is 22220022022181. The next prime is 22220022022241. The reversal of 22220022022221 is 12222022002222.

It is not a de Polignac number, because 22220022022221 - 2¹⁸ = 22220021760077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220022022241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586044820 + ... + 586082733.

It is an arithmetic number, because the mean of its divisors is an integer number (1898846637480).

Almost surely, 2^{22220022022221} is an apocalyptic number.

It is an amenable number.

22220022022221 is a deficient number, since it is larger than the sum of its proper divisors (8161524177459).

22220022022221 is a wasteful number, since it uses less digits than its factorization.

22220022022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172127716.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 22220022022221 its reverse (12222022002222), we get a palindrome (34442044024443).

The spelling of 22220022022221 in words is "twenty-two trillion, two hundred twenty billion, twenty-two million, twenty-two thousand, two hundred twenty-one".