20012120615 has 8 divisors (see below), whose sum is σ = 24421571280. Its totient is φ = 15738345472.

The previous prime is 20012120603. The next prime is 20012120627. The reversal of 20012120615 is 51602121002.

It is an interprime number because it is at equal distance from previous prime (20012120603) and next prime (20012120627).

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 20012120615 - 2¹⁰ = 20012119591 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, 33918554 + ... + 33919143.

It is an arithmetic number, because the mean of its divisors is an integer number (3052696410).

Almost surely, 2^20012120615 is an apocalyptic number.

20012120615 is a deficient number, since it is larger than the sum of its proper divisors (4409450665).

20012120615 is an equidigital number, since it uses as much as digits as its factorization.

20012120615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67837761.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 20012120615 its reverse (51602121002), we get a palindrome (71614241617).

The spelling of 20012120615 in words is "twenty billion, twelve million, one hundred twenty thousand, six hundred fifteen".