1212221053 has 2 divisors, whose sum is σ = 1212221054. Its totient is φ = 1212221052.

The previous prime is 1212221011. The next prime is 1212221063. The reversal of 1212221053 is 3501222121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907997689 + 304223364 = 30133^2 + 17442^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212221053 - 2²⁹ = 675350141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212221053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212221063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606110526 + 606110527.

It is an arithmetic number, because the mean of its divisors is an integer number (606110527).

Almost surely, 2^1212221053 is an apocalyptic number.

It is an amenable number.

1212221053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212221053 is an equidigital number, since it uses as much as digits as its factorization.

1212221053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1212221053 is about 34816.9650170718. The cubic root of 1212221053 is about 1066.2538379770.

Adding to 1212221053 its reverse (3501222121), we get a palindrome (4713443174).

The spelling of 1212221053 in words is "one billion, two hundred twelve million, two hundred twenty-one thousand, fifty-three".