2121214441 has 2 divisors, whose sum is σ = 2121214442. Its totient is φ = 2121214440.

The previous prime is 2121214421. The next prime is 2121214451. The reversal of 2121214441 is 1444121212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2112781225 + 8433216 = 45965^2 + 2904^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121214441 - 2⁵ = 2121214409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121214411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060607220 + 1060607221.

It is an arithmetic number, because the mean of its divisors is an integer number (1060607221).

Almost surely, 2^2121214441 is an apocalyptic number.

It is an amenable number.

2121214441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121214441 is an equidigital number, since it uses as much as digits as its factorization.

2121214441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 22.

The square root of 2121214441 is about 46056.6438312650. The cubic root of 2121214441 is about 1284.8769111004.

Adding to 2121214441 its reverse (1444121212), we get a palindrome (3565335653).

It can be divided in two parts, 21212 and 14441, that added together give a palindrome (35653).

The spelling of 2121214441 in words is "two billion, one hundred twenty-one million, two hundred fourteen thousand, four hundred forty-one".