212140013221 has 2 divisors, whose sum is σ = 212140013222. Its totient is φ = 212140013220.

The previous prime is 212140013203. The next prime is 212140013233. The reversal of 212140013221 is 122310041212.

212140013221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209557950625 + 2582062596 = 457775^2 + 50814^2 .

It is a cyclic number.

It is not a de Polignac number, because 212140013221 - 2¹³ = 212140005029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212140013291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106070006610 + 106070006611.

It is an arithmetic number, because the mean of its divisors is an integer number (106070006611).

Almost surely, 2^212140013221 is an apocalyptic number.

It is an amenable number.

212140013221 is a deficient number, since it is larger than the sum of its proper divisors (1).

212140013221 is an equidigital number, since it uses as much as digits as its factorization.

212140013221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212140013221 its reverse (122310041212), we get a palindrome (334450054433).

The spelling of 212140013221 in words is "two hundred twelve billion, one hundred forty million, thirteen thousand, two hundred twenty-one".