21220212000331 has 2 divisors, whose sum is σ = 21220212000332. Its totient is φ = 21220212000330.

The previous prime is 21220212000301. The next prime is 21220212000353. The reversal of 21220212000331 is 13300021202212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220212000331 - 2⁷ = 21220212000203 is a prime.

It is a super-2 number, since 2×21220212000331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220212000299 and 21220212000308.

It is not a weakly prime, because it can be changed into another prime (21220212000301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610106000165 + 10610106000166.

It is an arithmetic number, because the mean of its divisors is an integer number (10610106000166).

Almost surely, 2^{21220212000331} is an apocalyptic number.

21220212000331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220212000331 is an equidigital number, since it uses as much as digits as its factorization.

21220212000331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21220212000331 its reverse (13300021202212), we get a palindrome (34520233202543).

The spelling of 21220212000331 in words is "twenty-one trillion, two hundred twenty billion, two hundred twelve million, three hundred thirty-one", and thus it is an aban number.