22201020101221 has 16 divisors (see below), whose sum is σ = 23987157868800. Its totient is φ = 20426133667968.

The previous prime is 22201020101201. The next prime is 22201020101303. The reversal of 22201020101221 is 12210102010222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22201020101221 - 2⁹ = 22201020100709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201020101195 and 22201020101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201020101201) 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, 8349505 + ... + 10682521.

It is an arithmetic number, because the mean of its divisors is an integer number (1499197366800).

Almost surely, 2^{22201020101221} is an apocalyptic number.

It is an amenable number.

22201020101221 is a deficient number, since it is larger than the sum of its proper divisors (1786137767579).

22201020101221 is a wasteful number, since it uses less digits than its factorization.

22201020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335428.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22201020101221 its reverse (12210102010222), we get a palindrome (34411122111443).

The spelling of 22201020101221 in words is "twenty-two trillion, two hundred one billion, twenty million, one hundred one thousand, two hundred twenty-one".