321011121 has 16 divisors (see below), whose sum is σ = 447350400. Its totient is φ = 204492288.

The previous prime is 321011101. The next prime is 321011143. The reversal of 321011121 is 121110123.

It is not a de Polignac number, because 321011121 - 2⁶ = 321011057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321011097 and 321011106.

It is not an unprimeable number, because it can be changed into a prime (321011101) 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, 10581 + ... + 27458.

It is an arithmetic number, because the mean of its divisors is an integer number (27959400).

Almost surely, 2^321011121 is an apocalyptic number.

It is an amenable number.

321011121 is a deficient number, since it is larger than the sum of its proper divisors (126339279).

321011121 is a wasteful number, since it uses less digits than its factorization.

321011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38168.

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

The square root of 321011121 is about 17916.7832213263. The cubic root of 321011121 is about 684.7100348023.

Adding to 321011121 its reverse (121110123), we get a palindrome (442121244).

The spelling of 321011121 in words is "three hundred twenty-one million, eleven thousand, one hundred twenty-one".