21220022002112 has 28 divisors (see below), whose sum is σ = 42109542394920. Its totient is φ = 10609743603456.

The previous prime is 21220022002079. The next prime is 21220022002129. The reversal of 21220022002112 is 21120022002212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1606538 + ... + 6709769.

It is an arithmetic number, because the mean of its divisors is an integer number (1503912228390).

Almost surely, 2^{21220022002112} is an apocalyptic number.

It is an amenable number.

21220022002112 is a deficient number, since it is larger than the sum of its proper divisors (20889520392808).

21220022002112 is an equidigital number, since it uses as much as digits as its factorization.

21220022002112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8356188 (or 8356178 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21220022002112 its reverse (21120022002212), we get a palindrome (42340044004324).

The spelling of 21220022002112 in words is "twenty-one trillion, two hundred twenty billion, twenty-two million, two thousand, one hundred twelve".