22202012221 has 8 divisors (see below), whose sum is σ = 23408676320. Its totient is φ = 20999161872.

The previous prime is 22202012197. The next prime is 22202012237. The reversal of 22202012221 is 12221020222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22202012221 - 2¹⁹ = 22201487933 is a prime.

It is a super-2 number, since 2×22202012221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202012195 and 22202012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202022221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941475 + ... + 964768.

It is an arithmetic number, because the mean of its divisors is an integer number (2926084540).

Almost surely, 2^22202012221 is an apocalyptic number.

It is an amenable number.

22202012221 is a deficient number, since it is larger than the sum of its proper divisors (1206664099).

22202012221 is a wasteful number, since it uses less digits than its factorization.

22202012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906875.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22202012221 its reverse (12221020222), we get a palindrome (34423032443).

The spelling of 22202012221 in words is "twenty-two billion, two hundred two million, twelve thousand, two hundred twenty-one".