12042003001921 has 2 divisors, whose sum is σ = 12042003001922. Its totient is φ = 12042003001920.

The previous prime is 12042003001883. The next prime is 12042003001933. The reversal of 12042003001921 is 12910030024021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10366699909696 + 1675303092225 = 3219736^2 + 1294335^2 .

It is a cyclic number.

It is not a de Polignac number, because 12042003001921 - 2¹³ = 12042002993729 is a prime.

It is not a weakly prime, because it can be changed into another prime (12042003002921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6021001500960 + 6021001500961.

It is an arithmetic number, because the mean of its divisors is an integer number (6021001500961).

Almost surely, 2^{12042003001921} is an apocalyptic number.

It is an amenable number.

12042003001921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12042003001921 is an equidigital number, since it uses as much as digits as its factorization.

12042003001921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 12042003001921 its reverse (12910030024021), we get a palindrome (24952033025942).

The spelling of 12042003001921 in words is "twelve trillion, forty-two billion, three million, one thousand, nine hundred twenty-one".