101111001001601 has 2 divisors, whose sum is σ = 101111001001602. Its totient is φ = 101111001001600.

The previous prime is 101111001001547. The next prime is 101111001001639. The reversal of 101111001001601 is 106100100111101.

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., 100974382057201 + 136618944400 = 10048601^2 + 369620^2 .

It is a cyclic number.

It is not a de Polignac number, because 101111001001601 - 2¹⁴ = 101111000985217 is a prime.

It is not a weakly prime, because it can be changed into another prime (101111001061601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555500500800 + 50555500500801.

It is an arithmetic number, because the mean of its divisors is an integer number (50555500500801).

Almost surely, 2^{101111001001601} is an apocalyptic number.

It is an amenable number.

101111001001601 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111001001601 is an equidigital number, since it uses as much as digits as its factorization.

101111001001601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 101111001001601 its reverse (106100100111101), we get a palindrome (207211101112702).

The spelling of 101111001001601 in words is "one hundred one trillion, one hundred eleven billion, one million, one thousand, six hundred one".