1321002201 has 8 divisors (see below), whose sum is σ = 1764868000. Its totient is φ = 878902272.

The previous prime is 1321002191. The next prime is 1321002251. The reversal of 1321002201 is 1022001231.

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

It is not a de Polignac number, because 1321002201 - 2¹⁹ = 1320477913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321002251) 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, 439720 + ... + 442713.

It is an arithmetic number, because the mean of its divisors is an integer number (220608500).

Almost surely, 2^1321002201 is an apocalyptic number.

It is an amenable number.

1321002201 is a deficient number, since it is larger than the sum of its proper divisors (443865799).

1321002201 is an equidigital number, since it uses as much as digits as its factorization.

1321002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882935.

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

The square root of 1321002201 is about 36345.5939695584. The cubic root of 1321002201 is about 1097.2388603876.

Adding to 1321002201 its reverse (1022001231), we get a palindrome (2343003432).

The spelling of 1321002201 in words is "one billion, three hundred twenty-one million, two thousand, two hundred one".