1055911177221 has 8 divisors (see below), whose sum is σ = 1456429210080. Its totient is φ = 679666964592.

The previous prime is 1055911177157. The next prime is 1055911177229. The reversal of 1055911177221 is 1227711195501.

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

It is not a de Polignac number, because 1055911177221 - 2⁶ = 1055911177157 is a prime.

It is a super-2 number, since 2×1055911177221² (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 (1055911177229) 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, 6068454955 + ... + 6068455128.

It is an arithmetic number, because the mean of its divisors is an integer number (182053651260).

Almost surely, 2^{1055911177221} is an apocalyptic number.

It is an amenable number.

1055911177221 is a deficient number, since it is larger than the sum of its proper divisors (400518032859).

1055911177221 is a wasteful number, since it uses less digits than its factorization.

1055911177221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12136910115.

The product of its (nonzero) digits is 44100, while the sum is 42.

The spelling of 1055911177221 in words is "one trillion, fifty-five billion, nine hundred eleven million, one hundred seventy-seven thousand, two hundred twenty-one".