105061105021 has 2 divisors, whose sum is σ = 105061105022. Its totient is φ = 105061105020.

The previous prime is 105061105007. The next prime is 105061105027. The reversal of 105061105021 is 120501160501.

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., 103852152121 + 1208952900 = 322261^2 + 34770^2 .

It is an emirp because it is prime and its reverse (120501160501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105061105021 - 2⁵ = 105061104989 is a prime.

It is a super-2 number, since 2×105061105021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105061104983 and 105061105001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105061105027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52530552510 + 52530552511.

It is an arithmetic number, because the mean of its divisors is an integer number (52530552511).

Almost surely, 2^105061105021 is an apocalyptic number.

It is an amenable number.

105061105021 is a deficient number, since it is larger than the sum of its proper divisors (1).

105061105021 is an equidigital number, since it uses as much as digits as its factorization.

105061105021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 105061105021 its reverse (120501160501), we get a palindrome (225562265522).

The spelling of 105061105021 in words is "one hundred five billion, sixty-one million, one hundred five thousand, twenty-one".