1212213337 has 2 divisors, whose sum is σ = 1212213338. Its totient is φ = 1212213336.

The previous prime is 1212213313. The next prime is 1212213361. The reversal of 1212213337 is 7333122121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1212213313) and next prime (1212213361).

It can be written as a sum of positive squares in only one way, i.e., 881555481 + 330657856 = 29691^2 + 18184^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212213337 - 2²³ = 1203824729 is a prime.

It is a super-2 number, since 2×1212213337² = 2938922348801351138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212213437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606106668 + 606106669.

It is an arithmetic number, because the mean of its divisors is an integer number (606106669).

Almost surely, 2^1212213337 is an apocalyptic number.

It is an amenable number.

1212213337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212213337 is an equidigital number, since it uses as much as digits as its factorization.

1212213337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 1212213337 is about 34816.8542088455. The cubic root of 1212213337 is about 1066.2515756745.

Adding to 1212213337 its reverse (7333122121), we get a palindrome (8545335458).

The spelling of 1212213337 in words is "one billion, two hundred twelve million, two hundred thirteen thousand, three hundred thirty-seven".