21200002012222 has 24 divisors (see below), whose sum is σ = 35037787871016. Its totient is φ = 9540954900000.

The previous prime is 21200002012207. The next prime is 21200002012261. The reversal of 21200002012222 is 22221020000212.

It is a junction number, because it is equal to n+sod(n) for n = 21200002012196 and 21200002012205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47008029 + ... + 47456872.

It is an arithmetic number, because the mean of its divisors is an integer number (1459907827959).

Almost surely, 2^{21200002012222} is an apocalyptic number.

21200002012222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21200002012222 is a deficient number, since it is larger than the sum of its proper divisors (13837785858794).

21200002012222 is a wasteful number, since it uses less digits than its factorization.

21200002012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94465116 (or 94465015 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21200002012222 its reverse (22221020000212), we get a palindrome (43421022012434).

The spelling of 21200002012222 in words is "twenty-one trillion, two hundred billion, two million, twelve thousand, two hundred twenty-two".