1201332221103 has 32 divisors (see below), whose sum is σ = 1927555594240. Its totient is φ = 650140512480.

The previous prime is 1201332221003. The next prime is 1201332221107. The reversal of 1201332221103 is 3011222331021.

It is not a de Polignac number, because 1201332221103 - 2²⁰ = 1201331172527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201332221103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201332221107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 799248 + ... + 1743978.

It is an arithmetic number, because the mean of its divisors is an integer number (60236112320).

Almost surely, 2^{1201332221103} is an apocalyptic number.

1201332221103 is a deficient number, since it is larger than the sum of its proper divisors (726223373137).

1201332221103 is a wasteful number, since it uses less digits than its factorization.

1201332221103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947947.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1201332221103 its reverse (3011222331021), we get a palindrome (4212554552124).

The spelling of 1201332221103 in words is "one trillion, two hundred one billion, three hundred thirty-two million, two hundred twenty-one thousand, one hundred three".