22001212302221 has 16 divisors (see below), whose sum is σ = 22131597868800. Its totient is φ = 21871250856000.

The previous prime is 22001212302211. The next prime is 22001212302227. The reversal of 22001212302221 is 12220321210022.

It is a cyclic number.

It is not a de Polignac number, because 22001212302221 - 2¹⁸ = 22001212040077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001212302193 and 22001212302202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001212302227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416371415 + ... + 416424251.

It is an arithmetic number, because the mean of its divisors is an integer number (1383224866800).

Almost surely, 2^{22001212302221} is an apocalyptic number.

It is an amenable number.

22001212302221 is a deficient number, since it is larger than the sum of its proper divisors (130385566579).

22001212302221 is a wasteful number, since it uses less digits than its factorization.

22001212302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56804.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 22001212302221 its reverse (12220321210022), we get a palindrome (34221533512243).

The spelling of 22001212302221 in words is "twenty-two trillion, one billion, two hundred twelve million, three hundred two thousand, two hundred twenty-one".