22022100221 has 16 divisors (see below), whose sum is σ = 24523760448. Its totient is φ = 19607174400.

The previous prime is 22022100211. The next prime is 22022100227. The reversal of 22022100221 is 12200122022.

It is not a de Polignac number, because 22022100221 - 2¹⁸ = 22021838077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22022100196 and 22022100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022100227) 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, 41141 + ... + 213861.

It is an arithmetic number, because the mean of its divisors is an integer number (1532735028).

Almost surely, 2^22022100221 is an apocalyptic number.

It is an amenable number.

22022100221 is a deficient number, since it is larger than the sum of its proper divisors (2501660227).

22022100221 is a wasteful number, since it uses less digits than its factorization.

22022100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172972.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22022100221 its reverse (12200122022), we get a palindrome (34222222243).

The spelling of 22022100221 in words is "twenty-two billion, twenty-two million, one hundred thousand, two hundred twenty-one".