22201221001211 has 16 divisors (see below), whose sum is σ = 25923566592000. Its totient is φ = 18618561338208.

The previous prime is 22201221001177. The next prime is 22201221001213. The reversal of 22201221001211 is 11210012210222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22201221001211 is a prime.

It is a super-2 number, since 2×22201221001211² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22201221001211.

It is not an unprimeable number, because it can be changed into a prime (22201221001213) 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, 83211611 + ... + 83477988.

It is an arithmetic number, because the mean of its divisors is an integer number (1620222912000).

Almost surely, 2^{22201221001211} is an apocalyptic number.

22201221001211 is a deficient number, since it is larger than the sum of its proper divisors (3722345590789).

22201221001211 is a wasteful number, since it uses less digits than its factorization.

22201221001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166690018.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22201221001211 its reverse (11210012210222), we get a palindrome (33411233211433).

The spelling of 22201221001211 in words is "twenty-two trillion, two hundred one billion, two hundred twenty-one million, one thousand, two hundred eleven".