321122001 has 16 divisors (see below), whose sum is σ = 449097984. Its totient is φ = 203860224.

The previous prime is 321121961. The next prime is 321122029. The reversal of 321122001 is 100221123.

It is not a de Polignac number, because 321122001 - 2¹⁰ = 321120977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321122051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25560 + ... + 35993.

It is an arithmetic number, because the mean of its divisors is an integer number (28068624).

Almost surely, 2^321122001 is an apocalyptic number.

It is an amenable number.

321122001 is a deficient number, since it is larger than the sum of its proper divisors (127975983).

321122001 is a wasteful number, since it uses less digits than its factorization.

321122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61640.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 321122001 is about 17919.8772596243. The cubic root of 321122001 is about 684.7888606375.

Adding to 321122001 its reverse (100221123), we get a palindrome (421343124).

The spelling of 321122001 in words is "three hundred twenty-one million, one hundred twenty-two thousand, one".