12021031147 has 2 divisors, whose sum is σ = 12021031148. Its totient is φ = 12021031146.

The previous prime is 12021031103. The next prime is 12021031153. The reversal of 12021031147 is 74113012021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74113012021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12021031147 - 2³¹ = 9873547499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021031247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010515573 + 6010515574.

It is an arithmetic number, because the mean of its divisors is an integer number (6010515574).

Almost surely, 2^12021031147 is an apocalyptic number.

12021031147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021031147 is an equidigital number, since it uses as much as digits as its factorization.

12021031147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12021031147 its reverse (74113012021), we get a palindrome (86134043168).

The spelling of 12021031147 in words is "twelve billion, twenty-one million, thirty-one thousand, one hundred forty-seven".