1227491053221 has 8 divisors (see below), whose sum is σ = 1707813639360. Its totient is φ = 782747917952.

The previous prime is 1227491053199. The next prime is 1227491053279. The reversal of 1227491053221 is 1223501947221.

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 1227491053221 - 2¹⁷ = 1227490922149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1227491053221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227491053291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8894862636 + ... + 8894862773.

It is an arithmetic number, because the mean of its divisors is an integer number (213476704920).

Almost surely, 2^{1227491053221} is an apocalyptic number.

It is an amenable number.

1227491053221 is a deficient number, since it is larger than the sum of its proper divisors (480322586139).

1227491053221 is a wasteful number, since it uses less digits than its factorization.

1227491053221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17789725435.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 1227491053221 in words is "one trillion, two hundred twenty-seven billion, four hundred ninety-one million, fifty-three thousand, two hundred twenty-one".