1221133103301 has 4 divisors (see below), whose sum is σ = 1628177471072. Its totient is φ = 814088735532.

The previous prime is 1221133103297. The next prime is 1221133103321. The reversal of 1221133103301 is 1033013311221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1221133103301 - 2² = 1221133103297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221133103321) 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 3 ways as a sum of consecutive naturals, for example, 203522183881 + ... + 203522183886.

It is an arithmetic number, because the mean of its divisors is an integer number (407044367768).

Almost surely, 2^{1221133103301} is an apocalyptic number.

It is an amenable number.

1221133103301 is a deficient number, since it is larger than the sum of its proper divisors (407044367771).

1221133103301 is an equidigital number, since it uses as much as digits as its factorization.

1221133103301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407044367770.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1221133103301 its reverse (1033013311221), we get a palindrome (2254146414522).

The spelling of 1221133103301 in words is "one trillion, two hundred twenty-one billion, one hundred thirty-three million, one hundred three thousand, three hundred one".