2521111012 has 12 divisors (see below), whose sum is σ = 5042222080. Its totient is φ = 1080476136.

The previous prime is 2521111009. The next prime is 2521111013. The reversal of 2521111012 is 2101111252.

2521111012 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2521111013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45019812 + ... + 45019867.

Almost surely, 2^2521111012 is an apocalyptic number.

It is an amenable number.

2521111012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2521111012 is a wasteful number, since it uses less digits than its factorization.

2521111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90039690 (or 90039688 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 2521111012 is about 50210.6663170287. Note that the first 3 decimals coincide. The cubic root of 2521111012 is about 1361.0183786757.

Adding to 2521111012 its reverse (2101111252), we get a palindrome (4622222264).

The spelling of 2521111012 in words is "two billion, five hundred twenty-one million, one hundred eleven thousand, twelve".