1321112201 has 4 divisors (see below), whose sum is σ = 1333459152. Its totient is φ = 1308765252.

The previous prime is 1321112189. The next prime is 1321112207. The reversal of 1321112201 is 1022111231.

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: 1022111231 = 13697 ⋅74623.

It is a cyclic number.

It is not a de Polignac number, because 1321112201 - 2¹⁴ = 1321095817 is a prime.

It is a super-3 number, since 3×1321112201³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321112207) 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, 6173315 + ... + 6173528.

It is an arithmetic number, because the mean of its divisors is an integer number (333364788).

Almost surely, 2^1321112201 is an apocalyptic number.

It is an amenable number.

1321112201 is a deficient number, since it is larger than the sum of its proper divisors (12346951).

1321112201 is a wasteful number, since it uses less digits than its factorization.

1321112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12346950.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1321112201 is about 36347.1071888809. The cubic root of 1321112201 is about 1097.2693152763.

Adding to 1321112201 its reverse (1022111231), we get a palindrome (2343223432).

The spelling of 1321112201 in words is "one billion, three hundred twenty-one million, one hundred twelve thousand, two hundred one".