213104121 has 8 divisors (see below), whose sum is σ = 286046400. Its totient is φ = 141115632.

The previous prime is 213104117. The next prime is 213104123. The reversal of 213104121 is 121401312.

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

It is not a de Polignac number, because 213104121 - 2² = 213104117 is a prime.

It is a super-3 number, since 3×213104121³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213104121.

It is not an unprimeable number, because it can be changed into a prime (213104123) 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, 237925 + ... + 238818.

It is an arithmetic number, because the mean of its divisors is an integer number (35755800).

Almost surely, 2^213104121 is an apocalyptic number.

It is an amenable number.

213104121 is a deficient number, since it is larger than the sum of its proper divisors (72942279).

213104121 is a wasteful number, since it uses less digits than its factorization.

213104121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476895.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 213104121 is about 14598.0862101852. The cubic root of 213104121 is about 597.3065575948.

Adding to 213104121 its reverse (121401312), we get a palindrome (334505433).

The spelling of 213104121 in words is "two hundred thirteen million, one hundred four thousand, one hundred twenty-one".