22001200221 has 192 divisors, whose sum is σ = 41733586944. Its totient is φ = 10020257280.

The previous prime is 22001200211. The next prime is 22001200237. The reversal of 22001200221 is 12200210022.

It is not a de Polignac number, because 22001200221 - 2¹⁰ = 22001199197 is a prime.

It is a super-2 number, since 2×22001200221² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22001200197 and 22001200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001200211) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 57444196 + ... + 57444578.

It is an arithmetic number, because the mean of its divisors is an integer number (217362432).

Almost surely, 2^22001200221 is an apocalyptic number.

22001200221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22001200221 is a deficient number, since it is larger than the sum of its proper divisors (19732386723).

22001200221 is a wasteful number, since it uses less digits than its factorization.

22001200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22001200221 its reverse (12200210022), we get a palindrome (34201410243).

It can be divided in two parts, 22001 and 200221, that added together give a palindrome (222222).

The spelling of 22001200221 in words is "twenty-two billion, one million, two hundred thousand, two hundred twenty-one".