2012123051 has 4 divisors (see below), whose sum is σ = 2012220672. Its totient is φ = 2012025432.

The previous prime is 2012123027. The next prime is 2012123059. The reversal of 2012123051 is 1503212102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012123051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012123059) 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, 4460 + ... + 63593.

It is an arithmetic number, because the mean of its divisors is an integer number (503055168).

Almost surely, 2^2012123051 is an apocalyptic number.

2012123051 is a deficient number, since it is larger than the sum of its proper divisors (97621).

2012123051 is an equidigital number, since it uses as much as digits as its factorization.

2012123051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97620.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2012123051 is about 44856.6946062681. The cubic root of 2012123051 is about 1262.4616047664.

Adding to 2012123051 its reverse (1503212102), we get a palindrome (3515335153).

The spelling of 2012123051 in words is "two billion, twelve million, one hundred twenty-three thousand, fifty-one".