1221121403301 has 8 divisors (see below), whose sum is σ = 1667873136384. Its totient is φ = 794225302880.

The previous prime is 1221121403251. The next prime is 1221121403323. The reversal of 1221121403301 is 1033041211221.

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

It is a cyclic number.

It is not a de Polignac number, because 1221121403301 - 2⁹ = 1221121402789 is a prime.

It is a super-2 number, since 2×1221121403301² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221121403101) 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 7 ways as a sum of consecutive naturals, for example, 4963908021 + ... + 4963908266.

It is an arithmetic number, because the mean of its divisors is an integer number (208484142048).

Almost surely, 2^{1221121403301} is an apocalyptic number.

It is an amenable number.

1221121403301 is a deficient number, since it is larger than the sum of its proper divisors (446751733083).

1221121403301 is an equidigital number, since it uses as much as digits as its factorization.

1221121403301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9927816331.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1221121403301 its reverse (1033041211221), we get a palindrome (2254162614522).

The spelling of 1221121403301 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-one million, four hundred three thousand, three hundred one".