1200012201321 has 8 divisors (see below), whose sum is σ = 1610612403264. Its totient is φ = 794710066800.

The previous prime is 1200012201313. The next prime is 1200012201337. The reversal of 1200012201321 is 1231022100021.

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

It is not a de Polignac number, because 1200012201321 - 2³ = 1200012201313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200012201321.

It is not an unprimeable number, because it can be changed into a prime (1200012205321) 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, 1324516326 + ... + 1324517231.

It is an arithmetic number, because the mean of its divisors is an integer number (201326550408).

Almost surely, 2^{1200012201321} is an apocalyptic number.

It is an amenable number.

1200012201321 is a deficient number, since it is larger than the sum of its proper divisors (410600201943).

1200012201321 is a wasteful number, since it uses less digits than its factorization.

1200012201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649033711.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1200012201321 its reverse (1231022100021), we get a palindrome (2431034301342).

The spelling of 1200012201321 in words is "one trillion, two hundred billion, twelve million, two hundred one thousand, three hundred twenty-one".