20211222121183 has 2 divisors, whose sum is σ = 20211222121184. Its totient is φ = 20211222121182.

The previous prime is 20211222121169. The next prime is 20211222121199. The reversal of 20211222121183 is 38112122211202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211222121183 - 2⁵ = 20211222121151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211222131183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105611060591 + 10105611060592.

It is an arithmetic number, because the mean of its divisors is an integer number (10105611060592).

Almost surely, 2^{20211222121183} is an apocalyptic number.

20211222121183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211222121183 is an equidigital number, since it uses as much as digits as its factorization.

20211222121183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 28.

Adding to 20211222121183 its reverse (38112122211202), we get a palindrome (58323344332385).

The spelling of 20211222121183 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred eighty-three".