1212002111 has 2 divisors, whose sum is σ = 1212002112. Its totient is φ = 1212002110.

The previous prime is 1212002093. The next prime is 1212002117. The reversal of 1212002111 is 1112002121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212002111 - 2⁶ = 1212002047 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212002092 and 1212002101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212002117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606001055 + 606001056.

It is an arithmetic number, because the mean of its divisors is an integer number (606001056).

Almost surely, 2^1212002111 is an apocalyptic number.

1212002111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212002111 is an equidigital number, since it uses as much as digits as its factorization.

1212002111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1212002111 is about 34813.8206894905. The cubic root of 1212002111 is about 1066.1896412688.

Adding to 1212002111 its reverse (1112002121), we get a palindrome (2324004232).

The spelling of 1212002111 in words is "one billion, two hundred twelve million, two thousand, one hundred eleven".