12021430787 has 2 divisors, whose sum is σ = 12021430788. Its totient is φ = 12021430786.

The previous prime is 12021430783. The next prime is 12021430793. The reversal of 12021430787 is 78703412021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021430787 - 2² = 12021430783 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021430783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010715393 + 6010715394.

It is an arithmetic number, because the mean of its divisors is an integer number (6010715394).

Almost surely, 2^12021430787 is an apocalyptic number.

12021430787 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021430787 is an equidigital number, since it uses as much as digits as its factorization.

12021430787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The spelling of 12021430787 in words is "twelve billion, twenty-one million, four hundred thirty thousand, seven hundred eighty-seven".