331202121 has 8 divisors (see below), whose sum is σ = 446923680. Its totient is φ = 218140992.

The previous prime is 331202119. The next prime is 331202161. The reversal of 331202121 is 121202133.

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

It is not a de Polignac number, because 331202121 - 2¹ = 331202119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331202121.

It is not an unprimeable number, because it can be changed into a prime (331202101) 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, 664816 + ... + 665313.

It is an arithmetic number, because the mean of its divisors is an integer number (55865460).

Almost surely, 2^331202121 is an apocalyptic number.

It is an amenable number.

331202121 is a deficient number, since it is larger than the sum of its proper divisors (115721559).

331202121 is a wasteful number, since it uses less digits than its factorization.

331202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330215.

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

The square root of 331202121 is about 18198.9593383798. The cubic root of 331202121 is about 691.8804137243.

Adding to 331202121 its reverse (121202133), we get a palindrome (452404254).

The spelling of 331202121 in words is "three hundred thirty-one million, two hundred two thousand, one hundred twenty-one".