20212213210331 has 2 divisors, whose sum is σ = 20212213210332. Its totient is φ = 20212213210330.

The previous prime is 20212213210271. The next prime is 20212213210333. The reversal of 20212213210331 is 13301231221202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212213210331 is a prime.

It is a super-2 number, since 2×20212213210331² (a number of 27 digits) contains 22 as substring.

Together with 20212213210333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212213210297 and 20212213210306.

It is not a weakly prime, because it can be changed into another prime (20212213210333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106106605165 + 10106106605166.

It is an arithmetic number, because the mean of its divisors is an integer number (10106106605166).

Almost surely, 2^{20212213210331} is an apocalyptic number.

20212213210331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212213210331 is an equidigital number, since it uses as much as digits as its factorization.

20212213210331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20212213210331 its reverse (13301231221202), we get a palindrome (33513444431533).

The spelling of 20212213210331 in words is "twenty trillion, two hundred twelve billion, two hundred thirteen million, two hundred ten thousand, three hundred thirty-one".