21200022103 has 24 divisors (see below), whose sum is σ = 24120348000. Its totient is φ = 18520301376.

The previous prime is 21200022097. The next prime is 21200022143. The reversal of 21200022103 is 30122000212.

It is not a de Polignac number, because 21200022103 - 2¹³ = 21200013911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200022143) 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, 6563893 + ... + 6567121.

It is an arithmetic number, because the mean of its divisors is an integer number (1005014500).

Almost surely, 2^21200022103 is an apocalyptic number.

21200022103 is a deficient number, since it is larger than the sum of its proper divisors (2920325897).

21200022103 is a wasteful number, since it uses less digits than its factorization.

21200022103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21200022103 its reverse (30122000212), we get a palindrome (51322022315).

The spelling of 21200022103 in words is "twenty-one billion, two hundred million, twenty-two thousand, one hundred three".