12015533501 has 2 divisors, whose sum is σ = 12015533502. Its totient is φ = 12015533500.

The previous prime is 12015533471. The next prime is 12015533521. The reversal of 12015533501 is 10533551021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11990031001 + 25502500 = 109499^2 + 5050^2 .

It is a cyclic number.

It is not a de Polignac number, because 12015533501 - 2⁶ = 12015533437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12015533521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6007766750 + 6007766751.

It is an arithmetic number, because the mean of its divisors is an integer number (6007766751).

Almost surely, 2^12015533501 is an apocalyptic number.

It is an amenable number.

12015533501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015533501 is an equidigital number, since it uses as much as digits as its factorization.

12015533501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 12015533501 in words is "twelve billion, fifteen million, five hundred thirty-three thousand, five hundred one".