1212012001 has 2 divisors, whose sum is σ = 1212012002. Its totient is φ = 1212012000.

The previous prime is 1212011987. The next prime is 1212012007. The reversal of 1212012001 is 1002102121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1041030225 + 170981776 = 32265^2 + 13076^2 .

It is an emirp because it is prime and its reverse (1002102121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212012001 - 2¹⁵ = 1211979233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212012007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606006000 + 606006001.

It is an arithmetic number, because the mean of its divisors is an integer number (606006001).

Almost surely, 2^1212012001 is an apocalyptic number.

It is an amenable number.

1212012001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212012001 is an equidigital number, since it uses as much as digits as its factorization.

1212012001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1212012001 is about 34813.9627304908. The cubic root of 1212012001 is about 1066.1925413151.

Adding to 1212012001 its reverse (1002102121), we get a palindrome (2214114122).

The spelling of 1212012001 in words is "one billion, two hundred twelve million, twelve thousand, one".