22201212220021 has 8 divisors (see below), whose sum is σ = 22296293965440. Its totient is φ = 22106148722112.

The previous prime is 22201212220003. The next prime is 22201212220069. The reversal of 22201212220021 is 12002221210222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22201212220021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201212820021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120535 + ... + 6992788.

It is an arithmetic number, because the mean of its divisors is an integer number (2787036745680).

Almost surely, 2^{22201212220021} is an apocalyptic number.

It is an amenable number.

22201212220021 is a deficient number, since it is larger than the sum of its proper divisors (95081745419).

22201212220021 is a wasteful number, since it uses less digits than its factorization.

22201212220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9123755.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22201212220021 its reverse (12002221210222), we get a palindrome (34203433430243).

The spelling of 22201212220021 in words is "twenty-two trillion, two hundred one billion, two hundred twelve million, two hundred twenty thousand, twenty-one".