210712161 has 32 divisors (see below), whose sum is σ = 332470656. Its totient is φ = 117248000.

The previous prime is 210712129. The next prime is 210712171. The reversal of 210712161 is 161217012.

It is a happy number.

210712161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210712161 - 2⁵ = 210712129 is a prime.

It is a super-2 number, since 2×210712161² = 88799229586579842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210712121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18421 + ... + 27581.

It is an arithmetic number, because the mean of its divisors is an integer number (10389708).

Almost surely, 2^210712161 is an apocalyptic number.

It is an amenable number.

210712161 is a deficient number, since it is larger than the sum of its proper divisors (121758495).

210712161 is a wasteful number, since it uses less digits than its factorization.

210712161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9233.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 210712161 is about 14515.9278380681. The cubic root of 210712161 is about 595.0633465969.

Adding to 210712161 its reverse (161217012), we get a palindrome (371929173).

It can be divided in two parts, 21071 and 2161, that added together give a palindrome (23232).

The spelling of 210712161 in words is "two hundred ten million, seven hundred twelve thousand, one hundred sixty-one".