21190952103 has 8 divisors (see below), whose sum is σ = 28276325616. Its totient is φ = 14116440000.

The previous prime is 21190952071. The next prime is 21190952119. The reversal of 21190952103 is 30125909112.

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

It is not a de Polignac number, because 21190952103 - 2⁵ = 21190952071 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21190952603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2710798 + ... + 2718603.

It is an arithmetic number, because the mean of its divisors is an integer number (3534540702).

Almost surely, 2^21190952103 is an apocalyptic number.

21190952103 is a deficient number, since it is larger than the sum of its proper divisors (7085373513).

21190952103 is a wasteful number, since it uses less digits than its factorization.

21190952103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5430705.

The product of its (nonzero) digits is 4860, while the sum is 33.

The spelling of 21190952103 in words is "twenty-one billion, one hundred ninety million, nine hundred fifty-two thousand, one hundred three".