1221244344101 has 8 divisors (see below), whose sum is σ = 1239468126624. Its totient is φ = 1203146678160.

The previous prime is 1221244344053. The next prime is 1221244344167. The reversal of 1221244344101 is 1014434421221.

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 1221244344101 - 2²⁶ = 1221177235237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221244344401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31509635 + ... + 31548368.

It is an arithmetic number, because the mean of its divisors is an integer number (154933515828).

Almost surely, 2^{1221244344101} is an apocalyptic number.

It is an amenable number.

1221244344101 is a deficient number, since it is larger than the sum of its proper divisors (18223782523).

1221244344101 is a wasteful number, since it uses less digits than its factorization.

1221244344101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63058291.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 1221244344101 its reverse (1014434421221), we get a palindrome (2235678765322).

The spelling of 1221244344101 in words is "one trillion, two hundred twenty-one billion, two hundred forty-four million, three hundred forty-four thousand, one hundred one".