161012210 has 16 divisors (see below), whose sum is σ = 296562816. Its totient is φ = 62906928.

The previous prime is 161012129. The next prime is 161012221. The reversal of 161012210 is 12210161.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186794 + ... + 187653.

It is an arithmetic number, because the mean of its divisors is an integer number (18535176).

Almost surely, 2^161012210 is an apocalyptic number.

161012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161012210 is a deficient number, since it is larger than the sum of its proper divisors (135550606).

161012210 is a wasteful number, since it uses less digits than its factorization.

161012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374497.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 161012210 is about 12689.0586727306. The cubic root of 161012210 is about 544.0259345515.

Adding to 161012210 its reverse (12210161), we get a palindrome (173222371).

The spelling of 161012210 in words is "one hundred sixty-one million, twelve thousand, two hundred ten".