321212401 has 4 divisors (see below), whose sum is σ = 324331072. Its totient is φ = 318093732.

The previous prime is 321212377. The next prime is 321212413. The reversal of 321212401 is 104212123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104212123 = 5749 ⋅18127.

It is a cyclic number.

It is not a de Polignac number, because 321212401 - 2⁵ = 321212369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321242401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559181 + ... + 1559386.

It is an arithmetic number, because the mean of its divisors is an integer number (81082768).

Almost surely, 2^321212401 is an apocalyptic number.

It is an amenable number.

321212401 is a deficient number, since it is larger than the sum of its proper divisors (3118671).

321212401 is a wasteful number, since it uses less digits than its factorization.

321212401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118670.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 321212401 is about 17922.3994208365. The cubic root of 321212401 is about 684.8531135846.

Adding to 321212401 its reverse (104212123), we get a palindrome (425424524).

The spelling of 321212401 in words is "three hundred twenty-one million, two hundred twelve thousand, four hundred one".