21220201112 has 32 divisors (see below), whose sum is σ = 44016307200. Its totient is φ = 9509690400.

The previous prime is 21220201103. The next prime is 21220201153. The reversal of 21220201112 is 21110202212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1691912 + ... + 1704407.

It is an arithmetic number, because the mean of its divisors is an integer number (1375509600).

Almost surely, 2^21220201112 is an apocalyptic number.

21220201112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21220201112 is an abundant number, since it is smaller than the sum of its proper divisors (22796106088).

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

21220201112 is a wasteful number, since it uses less digits than its factorization.

21220201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396407 (or 3396403 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21220201112 its reverse (21110202212), we get a palindrome (42330403324).

The spelling of 21220201112 in words is "twenty-one billion, two hundred twenty million, two hundred one thousand, one hundred twelve".