100500521161 has 2 divisors, whose sum is σ = 100500521162. Its totient is φ = 100500521160.

The previous prime is 100500521131. The next prime is 100500521179. The reversal of 100500521161 is 161125005001.

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., 99127374025 + 1373147136 = 314845^2 + 37056^2 .

It is an emirp because it is prime and its reverse (161125005001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100500521161 - 2²¹ = 100498424009 is a prime.

It is a super-3 number, since 3×100500521161³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (100500521131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50250260580 + 50250260581.

It is an arithmetic number, because the mean of its divisors is an integer number (50250260581).

Almost surely, 2^100500521161 is an apocalyptic number.

It is an amenable number.

100500521161 is a deficient number, since it is larger than the sum of its proper divisors (1).

100500521161 is an equidigital number, since it uses as much as digits as its factorization.

100500521161 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 100500521161 its reverse (161125005001), we get a palindrome (261625526162).

The spelling of 100500521161 in words is "one hundred billion, five hundred million, five hundred twenty-one thousand, one hundred sixty-one".