12213004157 has 2 divisors, whose sum is σ = 12213004158. Its totient is φ = 12213004156.

The previous prime is 12213004127. The next prime is 12213004241. The reversal of 12213004157 is 75140031221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10406244121 + 1806760036 = 102011^2 + 42506^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213004157 - 2²² = 12208809853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213004127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106502078 + 6106502079.

It is an arithmetic number, because the mean of its divisors is an integer number (6106502079).

Almost surely, 2^12213004157 is an apocalyptic number.

It is an amenable number.

12213004157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213004157 is an equidigital number, since it uses as much as digits as its factorization.

12213004157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 12213004157 its reverse (75140031221), we get a palindrome (87353035378).

The spelling of 12213004157 in words is "twelve billion, two hundred thirteen million, four thousand, one hundred fifty-seven".