21220222020112 has 20 divisors (see below), whose sum is σ = 41151455066880. Its totient is φ = 10600491680288.

The previous prime is 21220222020037. The next prime is 21220222020119. The reversal of 21220222020112 is 21102022202212.

It is a self number, because there is not a number n which added to its sum of digits gives 21220222020112.

It is not an unprimeable number, because it can be changed into a prime (21220222020119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601189912 + ... + 601225207.

It is an arithmetic number, because the mean of its divisors is an integer number (2057572753344).

Almost surely, 2^{21220222020112} is an apocalyptic number.

It is an amenable number.

21220222020112 is a deficient number, since it is larger than the sum of its proper divisors (19931233046768).

21220222020112 is a wasteful number, since it uses less digits than its factorization.

21220222020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202416230 (or 1202416224 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21220222020112 its reverse (21102022202212), we get a palindrome (42322244222324).

The spelling of 21220222020112 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, twenty thousand, one hundred twelve".