1055223041221 has 8 divisors (see below), whose sum is σ = 1056672739584. Its totient is φ = 1053773509920.

The previous prime is 1055223041179. The next prime is 1055223041239. The reversal of 1055223041221 is 1221403225501.

It is a happy number.

1055223041221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1055223041221 - 2²⁵ = 1055189486789 is a prime.

It is a super-2 number, since 2×1055223041221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1055223041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055223041921) 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, 17722126 + ... + 17781568.

It is an arithmetic number, because the mean of its divisors is an integer number (132084092448).

Almost surely, 2^{1055223041221} is an apocalyptic number.

It is an amenable number.

1055223041221 is a deficient number, since it is larger than the sum of its proper divisors (1449698363).

1055223041221 is an equidigital number, since it uses as much as digits as its factorization.

1055223041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83531.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1055223041221 its reverse (1221403225501), we get a palindrome (2276626266722).

The spelling of 1055223041221 in words is "one trillion, fifty-five billion, two hundred twenty-three million, forty-one thousand, two hundred twenty-one".