212120221303 has 2 divisors, whose sum is σ = 212120221304. Its totient is φ = 212120221302.

The previous prime is 212120221147. The next prime is 212120221307. The reversal of 212120221303 is 303122021212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212120221303 - 2¹³ = 212120213111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212120221307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060110651 + 106060110652.

It is an arithmetic number, because the mean of its divisors is an integer number (106060110652).

Almost surely, 2^212120221303 is an apocalyptic number.

212120221303 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120221303 is an equidigital number, since it uses as much as digits as its factorization.

212120221303 is an evil number, because the sum of its binary digits is even.

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

Adding to 212120221303 its reverse (303122021212), we get a palindrome (515242242515).

The spelling of 212120221303 in words is "two hundred twelve billion, one hundred twenty million, two hundred twenty-one thousand, three hundred three".