161210011 has 2 divisors, whose sum is σ = 161210012. Its totient is φ = 161210010.

The previous prime is 161209969. The next prime is 161210017. The reversal of 161210011 is 110012161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161210011 - 2¹³ = 161201819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161209973 and 161210000.

It is not a weakly prime, because it can be changed into another prime (161210017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80605005 + 80605006.

It is an arithmetic number, because the mean of its divisors is an integer number (80605006).

Almost surely, 2^161210011 is an apocalyptic number.

161210011 is a deficient number, since it is larger than the sum of its proper divisors (1).

161210011 is an equidigital number, since it uses as much as digits as its factorization.

161210011 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 13.

The square root of 161210011 is about 12696.8504362302. The cubic root of 161210011 is about 544.2486191927.

Adding to 161210011 its reverse (110012161), we get a palindrome (271222172).

The spelling of 161210011 in words is "one hundred sixty-one million, two hundred ten thousand, eleven".