21333214122 has 64 divisors (see below), whose sum is σ = 47566756224. Its totient is φ = 6323466240.

The previous prime is 21333214109. The next prime is 21333214129. The reversal of 21333214122 is 22141233312.

It is a junction number, because it is equal to n+sod(n) for n = 21333214092 and 21333214101.

It is not an unprimeable number, because it can be changed into a prime (21333214129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1169778 + ... + 1187874.

It is an arithmetic number, because the mean of its divisors is an integer number (743230566).

Almost surely, 2^21333214122 is an apocalyptic number.

21333214122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21333214122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23783378112).

21333214122 is an abundant number, since it is smaller than the sum of its proper divisors (26233542102).

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

21333214122 is a wasteful number, since it uses less digits than its factorization.

21333214122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18503.

The product of its digits is 1728, while the sum is 24.

Adding to 21333214122 its reverse (22141233312), we get a palindrome (43474447434).

The spelling of 21333214122 in words is "twenty-one billion, three hundred thirty-three million, two hundred fourteen thousand, one hundred twenty-two".