221003011000 has 32 divisors (see below), whose sum is σ = 517147048080. Its totient is φ = 88401204000.

The previous prime is 221003010971. The next prime is 221003011013. The reversal of 221003011000 is 110300122.

It is a super-2 number, since 2×221003011000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110500506 + ... + 110502505.

Almost surely, 2^221003011000 is an apocalyptic number.

221003011000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221003011000 is an abundant number, since it is smaller than the sum of its proper divisors (296144037080).

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

221003011000 is a wasteful number, since it uses less digits than its factorization.

221003011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221003032 (or 221003018 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 221003011000 its reverse (110300122), we get a palindrome (221113311122).

The spelling of 221003011000 in words is "two hundred twenty-one billion, three million, eleven thousand".