221171667225150 has 96 divisors (see below), whose sum is σ = 563218002097920. Its totient is φ = 57416557639680.

The previous prime is 221171667225143. The next prime is 221171667225151. The reversal of 221171667225150 is 51522766171122.

It is a self number, because there is not a number n which added to its sum of digits gives 221171667225150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221171667225151) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 120404707 + ... + 122227806.

It is an arithmetic number, because the mean of its divisors is an integer number (5866854188520).

Almost surely, 2^{221171667225150} is an apocalyptic number.

221171667225150 is an abundant number, since it is smaller than the sum of its proper divisors (342046334872770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221171667225150 is a wasteful number, since it uses less digits than its factorization.

221171667225150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242632690 (or 242632685 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 221171667225150 in words is "two hundred twenty-one trillion, one hundred seventy-one billion, six hundred sixty-seven million, two hundred twenty-five thousand, one hundred fifty".