212610121 has 8 divisors (see below), whose sum is σ = 219723264. Its totient is φ = 205512960.

The previous prime is 212610119. The next prime is 212610149. The reversal of 212610121 is 121016212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212610121 - 2¹ = 212610119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212610095 and 212610104.

It is not an unprimeable number, because it can be changed into a prime (212610221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26985 + ... + 33961.

It is an arithmetic number, because the mean of its divisors is an integer number (27465408).

Almost surely, 2^212610121 is an apocalyptic number.

It is an amenable number.

212610121 is a deficient number, since it is larger than the sum of its proper divisors (7113143).

212610121 is an equidigital number, since it uses as much as digits as its factorization.

212610121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7991.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 212610121 is about 14581.1563670376. The cubic root of 212610121 is about 596.8446586040.

Adding to 212610121 its reverse (121016212), we get a palindrome (333626333).

The spelling of 212610121 in words is "two hundred twelve million, six hundred ten thousand, one hundred twenty-one".