12015214451 has 8 divisors (see below), whose sum is σ = 12336324000. Its totient is φ = 11695440960.

The previous prime is 12015214441. The next prime is 12015214459. The reversal of 12015214451 is 15441251021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12015214451 - 2¹⁴ = 12015198067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12015214451.

It is not an unprimeable number, because it can be changed into a prime (12015214459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315776 + ... + 351773.

It is an arithmetic number, because the mean of its divisors is an integer number (1542040500).

Almost surely, 2^12015214451 is an apocalyptic number.

12015214451 is a deficient number, since it is larger than the sum of its proper divisors (321109549).

12015214451 is an equidigital number, since it uses as much as digits as its factorization.

12015214451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668029.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 12015214451 its reverse (15441251021), we get a palindrome (27456465472).

The spelling of 12015214451 in words is "twelve billion, fifteen million, two hundred fourteen thousand, four hundred fifty-one".