21200221122 has 8 divisors (see below), whose sum is σ = 42400442256. Its totient is φ = 7066740372.

The previous prime is 21200221121. The next prime is 21200221123. The reversal of 21200221122 is 22112200212.

It is an interprime number because it is at equal distance from previous prime (21200221121) and next prime (21200221123).

It is a sphenic number, since it is the product of 3 distinct primes.

21200221122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21200221121) 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 3 ways as a sum of consecutive naturals, for example, 1766685088 + ... + 1766685099.

It is an arithmetic number, because the mean of its divisors is an integer number (5300055282).

Almost surely, 2^21200221122 is an apocalyptic number.

21200221122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21200221122 is a wasteful number, since it uses less digits than its factorization.

21200221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533370192.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21200221122 its reverse (22112200212), we get a palindrome (43312421334).

The spelling of 21200221122 in words is "twenty-one billion, two hundred million, two hundred twenty-one thousand, one hundred twenty-two".