22221012001211 has 4 divisors (see below), whose sum is σ = 22221078439272. Its totient is φ = 22220945563152.

The previous prime is 22221012001159. The next prime is 22221012001213. The reversal of 22221012001211 is 11210021012222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221012001211 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 22221012001211.

It is not an unprimeable number, because it can be changed into a prime (22221012001213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32714786 + ... + 33387111.

It is an arithmetic number, because the mean of its divisors is an integer number (5555269609818).

Almost surely, 2^{22221012001211} is an apocalyptic number.

22221012001211 is a deficient number, since it is larger than the sum of its proper divisors (66438061).

22221012001211 is an equidigital number, since it uses as much as digits as its factorization.

22221012001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66438060.

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

Adding to 22221012001211 its reverse (11210021012222), we get a palindrome (33431033013433).

The spelling of 22221012001211 in words is "twenty-two trillion, two hundred twenty-one billion, twelve million, one thousand, two hundred eleven".