221120331000 has 128 divisors (see below), whose sum is σ = 713685211200. Its totient is φ = 56932108800.

The previous prime is 221120330987. The next prime is 221120331013. The reversal of 221120331000 is 133021122.

It is an interprime number because it is at equal distance from previous prime (221120330987) and next prime (221120331013).

It is a super-2 number, since 2×221120331000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1183807 + ... + 1357806.

Almost surely, 2^221120331000 is an apocalyptic number.

221120331000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120331000 is an abundant number, since it is smaller than the sum of its proper divisors (492564880200).

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

221120331000 is a wasteful number, since it uses less digits than its factorization.

221120331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541666 (or 2541652 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 221120331000 its reverse (133021122), we get a palindrome (221253352122).

The spelling of 221120331000 in words is "two hundred twenty-one billion, one hundred twenty million, three hundred thirty-one thousand".