1101121001111 has 2 divisors, whose sum is σ = 1101121001112. Its totient is φ = 1101121001110.

The previous prime is 1101121001107. The next prime is 1101121001147. The reversal of 1101121001111 is 1111001211011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101121001111 - 2² = 1101121001107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101121001092 and 1101121001101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101121001161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550560500555 + 550560500556.

It is an arithmetic number, because the mean of its divisors is an integer number (550560500556).

Almost surely, 2^{1101121001111} is an apocalyptic number.

1101121001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101121001111 is an equidigital number, since it uses as much as digits as its factorization.

1101121001111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1101121001111 its reverse (1111001211011), we get a palindrome (2212122212122).

The spelling of 1101121001111 in words is "one trillion, one hundred one billion, one hundred twenty-one million, one thousand, one hundred eleven".