221876734000 has 80 divisors (see below), whose sum is σ = 553804482816. Its totient is φ = 85887744000.

The previous prime is 221876733989. The next prime is 221876734061. The reversal of 221876734000 is 437678122.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1727329 + ... + 1851328.

Almost surely, 2^221876734000 is an apocalyptic number.

221876734000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221876734000 is an abundant number, since it is smaller than the sum of its proper divisors (331927748816).

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

221876734000 is a wasteful number, since it uses less digits than its factorization.

221876734000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3578711 (or 3578695 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 221876734000 in words is "two hundred twenty-one billion, eight hundred seventy-six million, seven hundred thirty-four thousand".