2012125511 has 4 divisors (see below), whose sum is σ = 2195046024. Its totient is φ = 1829205000.

The previous prime is 2012125487. The next prime is 2012125519. The reversal of 2012125511 is 1155212102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012125511 is a prime.

It is a super-2 number, since 2×2012125511² = 8097298144034022242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012125519) 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, 91460240 + ... + 91460261.

It is an arithmetic number, because the mean of its divisors is an integer number (548761506).

Almost surely, 2^2012125511 is an apocalyptic number.

2012125511 is a deficient number, since it is larger than the sum of its proper divisors (182920513).

2012125511 is a wasteful number, since it uses less digits than its factorization.

2012125511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182920512.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 2012125511 is about 44856.7220269159. The cubic root of 2012125511 is about 1262.4621192568.

Adding to 2012125511 its reverse (1155212102), we get a palindrome (3167337613).

The spelling of 2012125511 in words is "two billion, twelve million, one hundred twenty-five thousand, five hundred eleven".