1111121110061 has 2 divisors, whose sum is σ = 1111121110062. Its totient is φ = 1111121110060.

The previous prime is 1111121109883. The next prime is 1111121110093. The reversal of 1111121110061 is 1600111211111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885490410025 + 225630700036 = 941005^2 + 475006^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111121110061 - 2³⁰ = 1110047368237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111121112061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555560555030 + 555560555031.

It is an arithmetic number, because the mean of its divisors is an integer number (555560555031).

Almost surely, 2^{1111121110061} is an apocalyptic number.

It is an amenable number.

1111121110061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111121110061 is an equidigital number, since it uses as much as digits as its factorization.

1111121110061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 17.

Adding to 1111121110061 its reverse (1600111211111), we get a palindrome (2711232321172).

The spelling of 1111121110061 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, one hundred ten thousand, sixty-one".