21423322432200 has 384 divisors, whose sum is σ = 74928034298880. Its totient is φ = 5024046720000.

The previous prime is 21423322432163. The next prime is 21423322432231. The reversal of 21423322432200 is 223422332412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44791519 + ... + 45267281.

It is an arithmetic number, because the mean of its divisors is an integer number (195125089320).

Almost surely, 2^{21423322432200} is an apocalyptic number.

21423322432200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21423322432200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37464017149440).

21423322432200 is an abundant number, since it is smaller than the sum of its proper divisors (53504711866680).

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

21423322432200 is a wasteful number, since it uses less digits than its factorization.

21423322432200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476069 (or 476060 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 21423322432200 its reverse (223422332412), we get a palindrome (21646744764612).

The spelling of 21423322432200 in words is "twenty-one trillion, four hundred twenty-three billion, three hundred twenty-two million, four hundred thirty-two thousand, two hundred".