111101020061 has 2 divisors, whose sum is σ = 111101020062. Its totient is φ = 111101020060.

The previous prime is 111101019979. The next prime is 111101020153. The reversal of 111101020061 is 160020101111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83547012025 + 27554008036 = 289045^2 + 165994^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101020061 - 2¹⁴ = 111101003677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111101020561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550510030 + 55550510031.

It is an arithmetic number, because the mean of its divisors is an integer number (55550510031).

Almost surely, 2^111101020061 is an apocalyptic number.

It is an amenable number.

111101020061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101020061 is an equidigital number, since it uses as much as digits as its factorization.

111101020061 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 14.

Adding to 111101020061 its reverse (160020101111), we get a palindrome (271121121172).

The spelling of 111101020061 in words is "one hundred eleven billion, one hundred one million, twenty thousand, sixty-one".