1111020120101 has 2 divisors, whose sum is σ = 1111020120102. Its totient is φ = 1111020120100.

The previous prime is 1111020120079. The next prime is 1111020120127. The reversal of 1111020120101 is 1010210201111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 922339348225 + 188680771876 = 960385^2 + 434374^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111020120101 - 2⁶ = 1111020120037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111020125101) 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, 555510060050 + 555510060051.

It is an arithmetic number, because the mean of its divisors is an integer number (555510060051).

Almost surely, 2^{1111020120101} is an apocalyptic number.

It is an amenable number.

1111020120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111020120101 is an equidigital number, since it uses as much as digits as its factorization.

1111020120101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1111020120101 its reverse (1010210201111), we get a palindrome (2121230321212).

The spelling of 1111020120101 in words is "one trillion, one hundred eleven billion, twenty million, one hundred twenty thousand, one hundred one".