101320321061 has 2 divisors, whose sum is σ = 101320321062. Its totient is φ = 101320321060.

The previous prime is 101320321057. The next prime is 101320321087. The reversal of 101320321061 is 160123023101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73641676900 + 27678644161 = 271370^2 + 166369^2 .

It is a cyclic number.

It is not a de Polignac number, because 101320321061 - 2² = 101320321057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101320321051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50660160530 + 50660160531.

It is an arithmetic number, because the mean of its divisors is an integer number (50660160531).

Almost surely, 2^101320321061 is an apocalyptic number.

It is an amenable number.

101320321061 is a deficient number, since it is larger than the sum of its proper divisors (1).

101320321061 is an equidigital number, since it uses as much as digits as its factorization.

101320321061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 101320321061 its reverse (160123023101), we get a palindrome (261443344162).

The spelling of 101320321061 in words is "one hundred one billion, three hundred twenty million, three hundred twenty-one thousand, sixty-one".