21333241100 has 18 divisors (see below), whose sum is σ = 46293133404. Its totient is φ = 8533296400.

The previous prime is 21333241093. The next prime is 21333241103. The reversal of 21333241100 is 114233312.

It is a super-3 number, since 3×21333241100³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (21333241103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106666106 + ... + 106666305.

Almost surely, 2^21333241100 is an apocalyptic number.

21333241100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333241100 is an abundant number, since it is smaller than the sum of its proper divisors (24959892304).

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

21333241100 is a wasteful number, since it uses less digits than its factorization.

21333241100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213332425 (or 213332418 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21333241100 its reverse (114233312), we get a palindrome (21447474412).

The spelling of 21333241100 in words is "twenty-one billion, three hundred thirty-three million, two hundred forty-one thousand, one hundred".