21004433235222 has 16 divisors (see below), whose sum is σ = 42009596014512. Its totient is φ = 7001356154400.

The previous prime is 21004433235167. The next prime is 21004433235223. The reversal of 21004433235222 is 22253233440012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21004433235223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30023029 + ... + 30714672.

It is an arithmetic number, because the mean of its divisors is an integer number (2625599750907).

Almost surely, 2^{21004433235222} is an apocalyptic number.

21004433235222 is an abundant number, since it is smaller than the sum of its proper divisors (21005162779290).

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

21004433235222 is a wasteful number, since it uses less digits than its factorization.

21004433235222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60795343.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 21004433235222 its reverse (22253233440012), we get a palindrome (43257666675234).

The spelling of 21004433235222 in words is "twenty-one trillion, four billion, four hundred thirty-three million, two hundred thirty-five thousand, two hundred twenty-two".