1121212001111 has 2 divisors, whose sum is σ = 1121212001112. Its totient is φ = 1121212001110.

The previous prime is 1121212001099. The next prime is 1121212001153. The reversal of 1121212001111 is 1111002121211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121212001111 - 2¹⁴ = 1121211984727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121212003111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560606000555 + 560606000556.

It is an arithmetic number, because the mean of its divisors is an integer number (560606000556).

Almost surely, 2^{1121212001111} is an apocalyptic number.

1121212001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121212001111 is an equidigital number, since it uses as much as digits as its factorization.

1121212001111 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 14.

Adding to 1121212001111 its reverse (1111002121211), we get a palindrome (2232214122322).

The spelling of 1121212001111 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one thousand, one hundred eleven".