21423330110000 has 800 divisors, whose sum is σ = 68339634316800. Its totient is φ = 6314112000000.

The previous prime is 21423330109999. The next prime is 21423330110101. The reversal of 21423330110000 is 1103332412.

It is a super-2 number, since 2×21423330110000² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1020099500 + ... + 1020120500.

It is an arithmetic number, because the mean of its divisors is an integer number (85424542896).

Almost surely, 2^{21423330110000} is an apocalyptic number.

21423330110000 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 21423330110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34169817158400).

21423330110000 is an abundant number, since it is smaller than the sum of its proper divisors (46916304206800).

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

21423330110000 is a wasteful number, since it uses less digits than its factorization.

21423330110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21127 (or 21106 counting only the distinct ones).

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

Adding to 21423330110000 its reverse (1103332412), we get a palindrome (21424433442412).

The spelling of 21423330110000 in words is "twenty-one trillion, four hundred twenty-three billion, three hundred thirty million, one hundred ten thousand".