1201021003221 has 8 divisors (see below), whose sum is σ = 1724542979040. Its totient is φ = 739089848112.

The previous prime is 1201021003213. The next prime is 1201021003243. The reversal of 1201021003221 is 1223001201021.

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

It is not a de Polignac number, because 1201021003221 - 2³ = 1201021003213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201021003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201021003271) 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, 15397705131 + ... + 15397705208.

It is an arithmetic number, because the mean of its divisors is an integer number (215567872380).

Almost surely, 2^{1201021003221} is an apocalyptic number.

It is an amenable number.

1201021003221 is a deficient number, since it is larger than the sum of its proper divisors (523521975819).

1201021003221 is a wasteful number, since it uses less digits than its factorization.

1201021003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30795410355.

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

Adding to 1201021003221 its reverse (1223001201021), we get a palindrome (2424022204242).

The spelling of 1201021003221 in words is "one trillion, two hundred one billion, twenty-one million, three thousand, two hundred twenty-one".