2001515012 has 24 divisors (see below), whose sum is σ = 4004099904. Its totient is φ = 857562912.

The previous prime is 2001515003. The next prime is 2001515027. The reversal of 2001515012 is 2105151002.

It is a super-2 number, since 2×2001515012² = 8012124686522720288, which contains 22 as substring.

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, 135998 + ... + 149994.

It is an arithmetic number, because the mean of its divisors is an integer number (166837496).

Almost surely, 2^2001515012 is an apocalyptic number.

It is an amenable number.

2001515012 is an abundant number, since it is smaller than the sum of its proper divisors (2002584892).

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

2001515012 is a wasteful number, since it uses less digits than its factorization.

2001515012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19115 (or 19113 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 2001515012 is about 44738.2946925785. The cubic root of 2001515012 is about 1260.2391021845.

Adding to 2001515012 its reverse (2105151002), we get a palindrome (4106666014).

The spelling of 2001515012 in words is "two billion, one million, five hundred fifteen thousand, twelve".