221023011000 has 128 divisors (see below), whose sum is σ = 752282069760. Its totient is φ = 53581328000.

The previous prime is 221023010987. The next prime is 221023011029. The reversal of 221023011000 is 110320122.

It is a super-2 number, since 2×221023011000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 3315834 + ... + 3381833.

It is an arithmetic number, because the mean of its divisors is an integer number (5877203670).

Almost surely, 2^221023011000 is an apocalyptic number.

221023011000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221023011000 is an abundant number, since it is smaller than the sum of its proper divisors (531259058760).

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

221023011000 is a wasteful number, since it uses less digits than its factorization.

221023011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6697702 (or 6697688 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 221023011000 its reverse (110320122), we get a palindrome (221133331122).

The spelling of 221023011000 in words is "two hundred twenty-one billion, twenty-three million, eleven thousand".