21230000333220 has 96 divisors (see below), whose sum is σ = 67936658340096. Its totient is φ = 4852524556800.

The previous prime is 21230000333197. The next prime is 21230000333251. The reversal of 21230000333220 is 2233300003212.

It is a super-2 number, since 2×21230000333220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62149690 + ... + 62490350.

It is an arithmetic number, because the mean of its divisors is an integer number (707673524376).

Almost surely, 2^{21230000333220} is an apocalyptic number.

21230000333220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21230000333220 is an abundant number, since it is smaller than the sum of its proper divisors (46706658006876).

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

21230000333220 is a wasteful number, since it uses less digits than its factorization.

21230000333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489061 (or 489059 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21230000333220 its reverse (2233300003212), we get a palindrome (23463300336432).

The spelling of 21230000333220 in words is "twenty-one trillion, two hundred thirty billion, three hundred thirty-three thousand, two hundred twenty".