21020122202103 has 24 divisors (see below), whose sum is σ = 30664472479056. Its totient is φ = 13874009328000.

The previous prime is 21020122202063. The next prime is 21020122202141. The reversal of 21020122202103 is 30120222102012.

21020122202103 is a `hidden beast` number, since 210 + 20 + 1 + 2 + 220 + 210 + 3 = 666.

It is not a de Polignac number, because 21020122202103 - 2⁶ = 21020122202039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020122202003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18987976 + ... + 20064482.

It is an arithmetic number, because the mean of its divisors is an integer number (1277686353294).

Almost surely, 2^{21020122202103} is an apocalyptic number.

21020122202103 is a deficient number, since it is larger than the sum of its proper divisors (9644350276953).

21020122202103 is a wasteful number, since it uses less digits than its factorization.

21020122202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098095 (or 1098092 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21020122202103 its reverse (30120222102012), we get a palindrome (51140344304115).

The spelling of 21020122202103 in words is "twenty-one trillion, twenty billion, one hundred twenty-two million, two hundred two thousand, one hundred three".