21201032103 has 8 divisors (see below), whose sum is σ = 28291983216. Its totient is φ = 14122051200.

The previous prime is 21201032101. The next prime is 21201032119. The reversal of 21201032103 is 30123010212.

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

It is not a de Polignac number, because 21201032103 - 2¹ = 21201032101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201032101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2988418 + ... + 2995503.

It is an arithmetic number, because the mean of its divisors is an integer number (3536497902).

Almost surely, 2^21201032103 is an apocalyptic number.

21201032103 is a deficient number, since it is larger than the sum of its proper divisors (7090951113).

21201032103 is a wasteful number, since it uses less digits than its factorization.

21201032103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985105.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21201032103 its reverse (30123010212), we get a palindrome (51324042315).

The spelling of 21201032103 in words is "twenty-one billion, two hundred one million, thirty-two thousand, one hundred three".