1201003221 has 16 divisors (see below), whose sum is σ = 1764214848. Its totient is φ = 720672000.

The previous prime is 1201003217. The next prime is 1201003231. The reversal of 1201003221 is 1223001021.

It is not a de Polignac number, because 1201003221 - 2² = 1201003217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201003197 and 1201003206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201003231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176836 + ... + 183501.

It is an arithmetic number, because the mean of its divisors is an integer number (110263428).

Almost surely, 2^1201003221 is an apocalyptic number.

1201003221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201003221 is a deficient number, since it is larger than the sum of its proper divisors (563211627).

1201003221 is a wasteful number, since it uses less digits than its factorization.

1201003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360452.

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

The square root of 1201003221 is about 34655.4933740670. The cubic root of 1201003221 is about 1062.9546204167.

Adding to 1201003221 its reverse (1223001021), we get a palindrome (2424004242).

It can be divided in two parts, 120100 and 3221, that added together give a palindrome (123321).

The spelling of 1201003221 in words is "one billion, two hundred one million, three thousand, two hundred twenty-one".