21210201212183 has 2 divisors, whose sum is σ = 21210201212184. Its totient is φ = 21210201212182.

The previous prime is 21210201212149. The next prime is 21210201212203. The reversal of 21210201212183 is 38121210201212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21210201212183 - 2¹⁸ = 21210200950039 is a prime.

It is a super-2 number, since 2×21210201212183² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210201212983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605100606091 + 10605100606092.

It is an arithmetic number, because the mean of its divisors is an integer number (10605100606092).

Almost surely, 2^{21210201212183} is an apocalyptic number.

21210201212183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210201212183 is an equidigital number, since it uses as much as digits as its factorization.

21210201212183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

Adding to 21210201212183 its reverse (38121210201212), we get a palindrome (59331411413395).

The spelling of 21210201212183 in words is "twenty-one trillion, two hundred ten billion, two hundred one million, two hundred twelve thousand, one hundred eighty-three".