1221302201 has 16 divisors (see below), whose sum is σ = 1458224640. Its totient is φ = 1000708800.

The previous prime is 1221302171. The next prime is 1221302213. The reversal of 1221302201 is 1022031221.

It is a happy number.

It is not a de Polignac number, because 1221302201 - 2¹⁴ = 1221285817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221302281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9281 + ... + 50286.

It is an arithmetic number, because the mean of its divisors is an integer number (91139040).

Almost surely, 2^1221302201 is an apocalyptic number.

It is an amenable number.

1221302201 is a deficient number, since it is larger than the sum of its proper divisors (236922439).

1221302201 is a wasteful number, since it uses less digits than its factorization.

1221302201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59704.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1221302201 is about 34947.1343746522. The cubic root of 1221302201 is about 1068.9097699610.

Adding to 1221302201 its reverse (1022031221), we get a palindrome (2243333422).

The spelling of 1221302201 in words is "one billion, two hundred twenty-one million, three hundred two thousand, two hundred one".