213000023121 has 8 divisors (see below), whose sum is σ = 284011283520. Its totient is φ = 141994389072.

The previous prime is 213000023083. The next prime is 213000023183. The reversal of 213000023121 is 121320000312.

213000023121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 213000023121 - 2⁷ = 213000022993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213000023121.

It is not an unprimeable number, because it can be changed into a prime (213000023021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317445 + ... + 1470258.

It is an arithmetic number, because the mean of its divisors is an integer number (35501410440).

Almost surely, 2^213000023121 is an apocalyptic number.

It is an amenable number.

213000023121 is a deficient number, since it is larger than the sum of its proper divisors (71011260399).

213000023121 is a wasteful number, since it uses less digits than its factorization.

213000023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813175.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 213000023121 its reverse (121320000312), we get a palindrome (334320023433).

The spelling of 213000023121 in words is "two hundred thirteen billion, twenty-three thousand, one hundred twenty-one".