21226106010 has 64 divisors (see below), whose sum is σ = 52734084480. Its totient is φ = 5461505280.

The previous prime is 21226106009. The next prime is 21226106029. The reversal of 21226106010 is 1060162212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1465705 + ... + 1480115.

It is an arithmetic number, because the mean of its divisors is an integer number (823970070).

Almost surely, 2^21226106010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21226106010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26367042240).

21226106010 is an abundant number, since it is smaller than the sum of its proper divisors (31507978470).

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

21226106010 is a wasteful number, since it uses less digits than its factorization.

21226106010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16143.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21226106010 its reverse (1060162212), we get a palindrome (22286268222).

The spelling of 21226106010 in words is "twenty-one billion, two hundred twenty-six million, one hundred six thousand, ten".