21222000101010 has 96 divisors (see below), whose sum is σ = 52184543621760. Its totient is φ = 5523380937984.

The previous prime is 21222000100979. The next prime is 21222000101011. The reversal of 21222000101010 is 1010100022212.

It is not an unprimeable number, because it can be changed into a prime (21222000101011) 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 47 ways as a sum of consecutive naturals, for example, 73019902 + ... + 73309958.

It is an arithmetic number, because the mean of its divisors is an integer number (543588996060).

Almost surely, 2^{21222000101010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21222000101010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26092271810880).

21222000101010 is an abundant number, since it is smaller than the sum of its proper divisors (30962543520750).

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

21222000101010 is a wasteful number, since it uses less digits than its factorization.

21222000101010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291472 (or 291429 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21222000101010 its reverse (1010100022212), we get a palindrome (22232100123222).

The spelling of 21222000101010 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one thousand, ten".