21150413103 has 16 divisors (see below), whose sum is σ = 29694297600. Its totient is φ = 13353877440.

The previous prime is 21150413087. The next prime is 21150413107. The reversal of 21150413103 is 30131405112.

It is not a de Polignac number, because 21150413103 - 2⁴ = 21150413087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21150413103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150413107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125098 + ... + 240728.

It is an arithmetic number, because the mean of its divisors is an integer number (1855893600).

Almost surely, 2^21150413103 is an apocalyptic number.

21150413103 is a deficient number, since it is larger than the sum of its proper divisors (8543884497).

21150413103 is a wasteful number, since it uses less digits than its factorization.

21150413103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118862.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 21150413103 its reverse (30131405112), we get a palindrome (51281818215).

The spelling of 21150413103 in words is "twenty-one billion, one hundred fifty million, four hundred thirteen thousand, one hundred three".