12021145677615 has 8 divisors (see below), whose sum is σ = 19233833084208. Its totient is φ = 6411277694720.

The previous prime is 12021145677587. The next prime is 12021145677643. The reversal of 12021145677615 is 51677654112021.

It is an interprime number because it is at equal distance from previous prime (12021145677587) and next prime (12021145677643).

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

It is not a de Polignac number, because 12021145677615 - 2¹⁹ = 12021145153327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400704855906 + ... + 400704855935.

It is an arithmetic number, because the mean of its divisors is an integer number (2404229135526).

Almost surely, 2^{12021145677615} is an apocalyptic number.

12021145677615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12021145677615 is a deficient number, since it is larger than the sum of its proper divisors (7212687406593).

12021145677615 is an equidigital number, since it uses as much as digits as its factorization.

12021145677615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801409711849.

The product of its (nonzero) digits is 705600, while the sum is 48.

Adding to 12021145677615 its reverse (51677654112021), we get a palindrome (63698799789636).

The spelling of 12021145677615 in words is "twelve trillion, twenty-one billion, one hundred forty-five million, six hundred seventy-seven thousand, six hundred fifteen".