12030491251 has 16 divisors (see below), whose sum is σ = 12825691200. Its totient is φ = 11260643328.

The previous prime is 12030491227. The next prime is 12030491261. The reversal of 12030491251 is 15219403021.

It is a cyclic number.

It is not a de Polignac number, because 12030491251 - 2¹¹ = 12030489203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12030491261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168265 + ... + 228853.

It is an arithmetic number, because the mean of its divisors is an integer number (801605700).

Almost surely, 2^12030491251 is an apocalyptic number.

12030491251 is a deficient number, since it is larger than the sum of its proper divisors (795199949).

12030491251 is an equidigital number, since it uses as much as digits as its factorization.

12030491251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60798.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 12030491251 its reverse (15219403021), we get a palindrome (27249894272).

The spelling of 12030491251 in words is "twelve billion, thirty million, four hundred ninety-one thousand, two hundred fifty-one".