22201012221 has 8 divisors (see below), whose sum is σ = 29797385664. Its totient is φ = 14702656800.

The previous prime is 22201012217. The next prime is 22201012319. The reversal of 22201012221 is 12221010222.

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

It is not a de Polignac number, because 22201012221 - 2² = 22201012217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22201012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201052221) 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, 24503976 + ... + 24504881.

It is an arithmetic number, because the mean of its divisors is an integer number (3724673208).

Almost surely, 2^22201012221 is an apocalyptic number.

It is an amenable number.

22201012221 is a deficient number, since it is larger than the sum of its proper divisors (7596373443).

22201012221 is a wasteful number, since it uses less digits than its factorization.

22201012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49009011.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22201012221 its reverse (12221010222), we get a palindrome (34422022443).

The spelling of 22201012221 in words is "twenty-two billion, two hundred one million, twelve thousand, two hundred twenty-one".