21102113219 has 8 divisors (see below), whose sum is σ = 23026958640. Its totient is φ = 19178346400.

The previous prime is 21102113173. The next prime is 21102113237. The reversal of 21102113219 is 91231120112.

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

It is a cyclic number.

It is not a de Polignac number, because 21102113219 - 2¹⁶ = 21102047683 is a prime.

It is a super-2 number, since 2×21102113219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21102113194 and 21102113203.

It is not an unprimeable number, because it can be changed into a prime (21102113239) 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, 228464 + ... + 307245.

It is an arithmetic number, because the mean of its divisors is an integer number (2878369830).

Almost surely, 2^21102113219 is an apocalyptic number.

21102113219 is a deficient number, since it is larger than the sum of its proper divisors (1924845421).

21102113219 is a wasteful number, since it uses less digits than its factorization.

21102113219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539301.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 21102113219 in words is "twenty-one billion, one hundred two million, one hundred thirteen thousand, two hundred nineteen".