22203213041221 has 2 divisors, whose sum is σ = 22203213041222. Its totient is φ = 22203213041220.

The previous prime is 22203213041209. The next prime is 22203213041231. The reversal of 22203213041221 is 12214031230222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22200776532900 + 2436508321 = 4711770^2 + 49361^2 .

It is a cyclic number.

It is not a de Polignac number, because 22203213041221 - 2⁵ = 22203213041189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22203213041231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101606520610 + 11101606520611.

It is an arithmetic number, because the mean of its divisors is an integer number (11101606520611).

Almost surely, 2^{22203213041221} is an apocalyptic number.

It is an amenable number.

22203213041221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22203213041221 is an equidigital number, since it uses as much as digits as its factorization.

22203213041221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 22203213041221 its reverse (12214031230222), we get a palindrome (34417244271443).

The spelling of 22203213041221 in words is "twenty-two trillion, two hundred three billion, two hundred thirteen million, forty-one thousand, two hundred twenty-one".