21267293103 has 24 divisors (see below), whose sum is σ = 36240429056. Its totient is φ = 11760714000.

The previous prime is 21267293083. The next prime is 21267293107. The reversal of 21267293103 is 30139276212.

21267293103 is a `hidden beast` number, since 2 + 1 + 267 + 293 + 103 = 666.

It is not a de Polignac number, because 21267293103 - 2²⁵ = 21233738671 is a prime.

It is a super-2 number, since 2×21267293103² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21267293107) 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 23 ways as a sum of consecutive naturals, for example, 5442823 + ... + 5446728.

Almost surely, 2^21267293103 is an apocalyptic number.

21267293103 is a deficient number, since it is larger than the sum of its proper divisors (14973135953).

21267293103 is a wasteful number, since it uses less digits than its factorization.

21267293103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889595 (or 10889592 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 21267293103 in words is "twenty-one billion, two hundred sixty-seven million, two hundred ninety-three thousand, one hundred three".