21022101200212 has 192 divisors, whose sum is σ = 43305704386560. Its totient is φ = 8744485745664.

The previous prime is 21022101200141. The next prime is 21022101200239. The reversal of 21022101200212 is 21200210122012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35812778583 + ... + 35812779169.

It is an arithmetic number, because the mean of its divisors is an integer number (225550543680).

Almost surely, 2^{21022101200212} is an apocalyptic number.

It is an amenable number.

21022101200212 is an abundant number, since it is smaller than the sum of its proper divisors (22283603186348).

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

21022101200212 is a wasteful number, since it uses less digits than its factorization.

21022101200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1588 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022101200212 its reverse (21200210122012), we get a palindrome (42222311322224).

The spelling of 21022101200212 in words is "twenty-one trillion, twenty-two billion, one hundred one million, two hundred thousand, two hundred twelve".