12012615020 has 96 divisors (see below), whose sum is σ = 29542926336. Its totient is φ = 4017081600.

The previous prime is 12012615019. The next prime is 12012615029. The reversal of 12012615020 is 2051621021.

It is a super-4 number, since 4×12012615020⁴ (a number of 41 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12012614983 and 12012615001.

It is not an unprimeable number, because it can be changed into a prime (12012615029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7409810 + ... + 7411430.

It is an arithmetic number, because the mean of its divisors is an integer number (307738816).

Almost surely, 2^12012615020 is an apocalyptic number.

12012615020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12012615020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14771463168).

12012615020 is an abundant number, since it is smaller than the sum of its proper divisors (17530311316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12012615020 is a wasteful number, since it uses less digits than its factorization.

12012615020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911 (or 2909 counting only the distinct ones).

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

The spelling of 12012615020 in words is "twelve billion, twelve million, six hundred fifteen thousand, twenty".