11421213137 has 2 divisors, whose sum is σ = 11421213138. Its totient is φ = 11421213136.

The previous prime is 11421213119. The next prime is 11421213149. The reversal of 11421213137 is 73131212411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11287787536 + 133425601 = 106244^2 + 11551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11421213137 is a prime.

It is not a weakly prime, because it can be changed into another prime (11421213107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710606568 + 5710606569.

It is an arithmetic number, because the mean of its divisors is an integer number (5710606569).

Almost surely, 2^11421213137 is an apocalyptic number.

It is an amenable number.

11421213137 is a deficient number, since it is larger than the sum of its proper divisors (1).

11421213137 is an equidigital number, since it uses as much as digits as its factorization.

11421213137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

Adding to 11421213137 its reverse (73131212411), we get a palindrome (84552425548).

The spelling of 11421213137 in words is "eleven billion, four hundred twenty-one million, two hundred thirteen thousand, one hundred thirty-seven".