161001210 has 32 divisors (see below), whose sum is σ = 391299840. Its totient is φ = 42389568.

The previous prime is 161001209. The next prime is 161001221. The reversal of 161001210 is 12100161.

It is a happy number.

161001210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31597 + ... + 36336.

It is an arithmetic number, because the mean of its divisors is an integer number (12228120).

Almost surely, 2^161001210 is an apocalyptic number.

161001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161001210 is an abundant number, since it is smaller than the sum of its proper divisors (230298630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161001210 is a wasteful number, since it uses less digits than its factorization.

161001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68022.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 161001210 is about 12688.6252210395. The cubic root of 161001210 is about 544.0135453843.

Adding to 161001210 its reverse (12100161), we get a palindrome (173101371).

The spelling of 161001210 in words is "one hundred sixty-one million, one thousand, two hundred ten".