21020022220103 has 8 divisors (see below), whose sum is σ = 21606196164336. Its totient is φ = 20437347822400.

The previous prime is 21020022220091. The next prime is 21020022220129. The reversal of 21020022220103 is 30102222002012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21020022220103 - 2⁶ = 21020022220039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020022220003) 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, 874874453 + ... + 874898478.

It is an arithmetic number, because the mean of its divisors is an integer number (2700774520542).

Almost surely, 2^{21020022220103} is an apocalyptic number.

21020022220103 is a deficient number, since it is larger than the sum of its proper divisors (586173944233).

21020022220103 is a wasteful number, since it uses less digits than its factorization.

21020022220103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749773265.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21020022220103 its reverse (30102222002012), we get a palindrome (51122244222115).

The spelling of 21020022220103 in words is "twenty-one trillion, twenty billion, twenty-two million, two hundred twenty thousand, one hundred three".