20212000110221 has 2 divisors, whose sum is σ = 20212000110222. Its totient is φ = 20212000110220.

The previous prime is 20212000110173. The next prime is 20212000110233. The reversal of 20212000110221 is 12201100021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20043403644196 + 168596466025 = 4476986^2 + 410605^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212000110221 - 2⁶ = 20212000110157 is a prime.

It is a super-2 number, since 2×20212000110221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20212000110196 and 20212000110205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212000110251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106000055110 + 10106000055111.

It is an arithmetic number, because the mean of its divisors is an integer number (10106000055111).

Almost surely, 2^{20212000110221} is an apocalyptic number.

It is an amenable number.

20212000110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212000110221 is an equidigital number, since it uses as much as digits as its factorization.

20212000110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20212000110221 its reverse (12201100021202), we get a palindrome (32413100131423).

The spelling of 20212000110221 in words is "twenty trillion, two hundred twelve billion, one hundred ten thousand, two hundred twenty-one".