221005543000 has 64 divisors (see below), whose sum is σ = 564166905120. Its totient is φ = 80365648000.

The previous prime is 221005542991. The next prime is 221005543007. The reversal of 221005543000 is 345500122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221005543007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10034707 + ... + 10056706.

Almost surely, 2^221005543000 is an apocalyptic number.

221005543000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221005543000 is an abundant number, since it is smaller than the sum of its proper divisors (343161362120).

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

221005543000 is a wasteful number, since it uses less digits than its factorization.

221005543000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20091445 (or 20091431 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The spelling of 221005543000 in words is "two hundred twenty-one billion, five million, five hundred forty-three thousand".