11521222177071 has 8 divisors (see below), whose sum is σ = 15361703471664. Its totient is φ = 7680777833600.

The previous prime is 11521222177057. The next prime is 11521222177097. The reversal of 11521222177071 is 17077122212511.

It is a happy number.

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 11521222177071 - 2⁶ = 11521222177007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521222197071) 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, 8501880 + ... + 9763421.

It is an arithmetic number, because the mean of its divisors is an integer number (1920212933958).

Almost surely, 2^{11521222177071} is an apocalyptic number.

11521222177071 is a deficient number, since it is larger than the sum of its proper divisors (3840481294593).

11521222177071 is a wasteful number, since it uses less digits than its factorization.

11521222177071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18475561.

The product of its (nonzero) digits is 27440, while the sum is 39.

Adding to 11521222177071 its reverse (17077122212511), we get a palindrome (28598344389582).

The spelling of 11521222177071 in words is "eleven trillion, five hundred twenty-one billion, two hundred twenty-two million, one hundred seventy-seven thousand, seventy-one".