1056171221150 has 12 divisors (see below), whose sum is σ = 1964478471432. Its totient is φ = 422468488440.

The previous prime is 1056171221099. The next prime is 1056171221269. The reversal of 1056171221150 is 511221716501.

It is a super-2 number, since 2×1056171221150² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 10561712162 + ... + 10561712261.

It is an arithmetic number, because the mean of its divisors is an integer number (163706539286).

Almost surely, 2^{1056171221150} is an apocalyptic number.

1056171221150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1056171221150 is a deficient number, since it is larger than the sum of its proper divisors (908307250282).

1056171221150 is a wasteful number, since it uses less digits than its factorization.

1056171221150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21123424435 (or 21123424430 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 32.

Adding to 1056171221150 its reverse (511221716501), we get a palindrome (1567392937651).

The spelling of 1056171221150 in words is "one trillion, fifty-six billion, one hundred seventy-one million, two hundred twenty-one thousand, one hundred fifty".