221334863004 has 108 divisors (see below), whose sum is σ = 600492012120. Its totient is φ = 68710317120.

The previous prime is 221334863003. The next prime is 221334863039. The reversal of 221334863004 is 400368433122.

221334863004 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 348 + 6 + 300 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 221334863004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221334863003) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 622434 + ... + 911094.

Almost surely, 2^221334863004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221334863004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300246006060).

221334863004 is an abundant number, since it is smaller than the sum of its proper divisors (379157149116).

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

221334863004 is a wasteful number, since it uses less digits than its factorization.

221334863004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288768 (or 288744 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 221334863004 in words is "two hundred twenty-one billion, three hundred thirty-four million, eight hundred sixty-three thousand, four".