21220213233000 has 128 divisors (see below), whose sum is σ = 67746764891520. Its totient is φ = 5527125273600.

The previous prime is 21220213232963. The next prime is 21220213233137. The reversal of 21220213233000 is 33231202212.

It is a happy 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, 82119889 + ... + 82377888.

It is an arithmetic number, because the mean of its divisors is an integer number (529271600715).

Almost surely, 2^{21220213233000} is an apocalyptic number.

21220213233000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220213233000 is an abundant number, since it is smaller than the sum of its proper divisors (46526551658520).

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

21220213233000 is a wasteful number, since it uses less digits than its factorization.

21220213233000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164497844 (or 164497830 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21220213233000 its reverse (33231202212), we get a palindrome (21253444435212).

The spelling of 21220213233000 in words is "twenty-one trillion, two hundred twenty billion, two hundred thirteen million, two hundred thirty-three thousand".