22001211210221 has 8 divisors (see below), whose sum is σ = 22381664441760. Its totient is φ = 21621009690352.

The previous prime is 22001211210161. The next prime is 22001211210227. The reversal of 22001211210221 is 12201211210022.

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

It is a cyclic number.

It is not a de Polignac number, because 22001211210221 - 2⁶ = 22001211210157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22001211210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001211210227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62751590 + ... + 63101223.

It is an arithmetic number, because the mean of its divisors is an integer number (2797708055220).

Almost surely, 2^{22001211210221} is an apocalyptic number.

It is an amenable number.

22001211210221 is a deficient number, since it is larger than the sum of its proper divisors (380453231539).

22001211210221 is a wasteful number, since it uses less digits than its factorization.

22001211210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125855835.

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

Adding to 22001211210221 its reverse (12201211210022), we get a palindrome (34202422420243).

The spelling of 22001211210221 in words is "twenty-two trillion, one billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-one".