212002321 has 8 divisors (see below), whose sum is σ = 213557760. Its totient is φ = 210452928.

The previous prime is 212002313. The next prime is 212002363. The reversal of 212002321 is 123200212.

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 212002321 - 2³ = 212002313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002391) 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, 86505 + ... + 88921.

It is an arithmetic number, because the mean of its divisors is an integer number (26694720).

Almost surely, 2^212002321 is an apocalyptic number.

It is an amenable number.

212002321 is a deficient number, since it is larger than the sum of its proper divisors (1555439).

212002321 is a wasteful number, since it uses less digits than its factorization.

212002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 212002321 is about 14560.2994818101. The cubic root of 212002321 is about 596.2753717886.

Adding to 212002321 its reverse (123200212), we get a palindrome (335202533).

The spelling of 212002321 in words is "two hundred twelve million, two thousand, three hundred twenty-one".