1201321 has 4 divisors (see below), whose sum is σ = 1310544. Its totient is φ = 1092100.

The previous prime is 1201309. The next prime is 1201327. The reversal of 1201321 is 1231021.

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.

It is a cyclic number.

It is not a de Polignac number, because 1201321 - 2⁹ = 1200809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201298 and 1201307.

It is not an unprimeable number, because it can be changed into a prime (1201327) 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, 54595 + ... + 54616.

It is an arithmetic number, because the mean of its divisors is an integer number (327636).

2^1201321 is an apocalyptic number.

1201321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201321 is a deficient number, since it is larger than the sum of its proper divisors (109223).

1201321 is a wasteful number, since it uses less digits than its factorization.

1201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109222.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1201321 is about 1096.0479004131. The cubic root of 1201321 is about 106.3048362843.

Adding to 1201321 its reverse (1231021), we get a palindrome (2432342).

It can be divided in two parts, 120 and 1321, that added together give a palindrome (1441).

The spelling of 1201321 in words is "one million, two hundred one thousand, three hundred twenty-one".