1212100993 has 2 divisors, whose sum is σ = 1212100994. Its totient is φ = 1212100992.

The previous prime is 1212100963. The next prime is 1212101017. The reversal of 1212100993 is 3990012121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146296449 + 65804544 = 33857^2 + 8112^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212100993 - 2⁹ = 1212100481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212100933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050496 + 606050497.

It is an arithmetic number, because the mean of its divisors is an integer number (606050497).

Almost surely, 2^1212100993 is an apocalyptic number.

It is an amenable number.

1212100993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212100993 is an equidigital number, since it uses as much as digits as its factorization.

1212100993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1212100993 is about 34815.2408149075. The cubic root of 1212100993 is about 1066.2186357445.

The spelling of 1212100993 in words is "one billion, two hundred twelve million, one hundred thousand, nine hundred ninety-three".