21242220132112 has 40 divisors (see below), whose sum is σ = 47243553201216. Its totient is φ = 9063703733376.

The previous prime is 21242220132103. The next prime is 21242220132113. The reversal of 21242220132112 is 21123102224212.

It is a super-2 number, since 2×21242220132112² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21242220132113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417733783 + ... + 417784630.

Almost surely, 2^{21242220132112} is an apocalyptic number.

It is an amenable number.

21242220132112 is an abundant number, since it is smaller than the sum of its proper divisors (26001333069104).

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

21242220132112 is a wasteful number, since it uses less digits than its factorization.

21242220132112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835518655 (or 835518649 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21242220132112 its reverse (21123102224212), we get a palindrome (42365322356324).

The spelling of 21242220132112 in words is "twenty-one trillion, two hundred forty-two billion, two hundred twenty million, one hundred thirty-two thousand, one hundred twelve".