221173612041400 has 96 divisors (see below), whose sum is σ = 536723029893600. Its totient is φ = 84601402265600.

The previous prime is 221173612041373. The next prime is 221173612041449. The reversal of 221173612041400 is 4140216371122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11954640 + ... + 24192160.

It is an arithmetic number, because the mean of its divisors is an integer number (5590864894725).

Almost surely, 2^{221173612041400} is an apocalyptic number.

221173612041400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221173612041400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268361514946800).

221173612041400 is an abundant number, since it is smaller than the sum of its proper divisors (315549417852200).

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

221173612041400 is a wasteful number, since it uses less digits than its factorization.

221173612041400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241489 (or 12241480 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 221173612041400 in words is "two hundred twenty-one trillion, one hundred seventy-three billion, six hundred twelve million, forty-one thousand, four hundred".