221243703000 has 128 divisors (see below), whose sum is σ = 690446877120. Its totient is φ = 58984089600.

The previous prime is 221243702971. The next prime is 221243703001. The reversal of 221243703000 is 307342122.

It is a super-2 number, since 2×221243703000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221243703001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19725394 + ... + 19736606.

Almost surely, 2^221243703000 is an apocalyptic number.

221243703000 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 221243703000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345223438560).

221243703000 is an abundant number, since it is smaller than the sum of its proper divisors (469203174120).

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

221243703000 is a wasteful number, since it uses less digits than its factorization.

221243703000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814 (or 17800 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The spelling of 221243703000 in words is "two hundred twenty-one billion, two hundred forty-three million, seven hundred three thousand".