212220110251 has 2 divisors, whose sum is σ = 212220110252. Its totient is φ = 212220110250.

The previous prime is 212220110149. The next prime is 212220110281. The reversal of 212220110251 is 152011022212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212220110251 - 2¹¹ = 212220108203 is a prime.

It is not a weakly prime, because it can be changed into another prime (212220110281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110055125 + 106110055126.

It is an arithmetic number, because the mean of its divisors is an integer number (106110055126).

Almost surely, 2^212220110251 is an apocalyptic number.

212220110251 is a deficient number, since it is larger than the sum of its proper divisors (1).

212220110251 is an equidigital number, since it uses as much as digits as its factorization.

212220110251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 212220110251 its reverse (152011022212), we get a palindrome (364231132463).

The spelling of 212220110251 in words is "two hundred twelve billion, two hundred twenty million, one hundred ten thousand, two hundred fifty-one".