21211101111099 has 8 divisors (see below), whose sum is σ = 28971260054352. Its totient is φ = 13795838120960.

The previous prime is 21211101111077. The next prime is 21211101111103. The reversal of 21211101111099 is 99011110111212.

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 21211101111099 - 2²⁴ = 21211084333883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21211101111019) 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, 86223988134 + ... + 86223988379.

It is an arithmetic number, because the mean of its divisors is an integer number (3621407506794).

Almost surely, 2^{21211101111099} is an apocalyptic number.

21211101111099 is a deficient number, since it is larger than the sum of its proper divisors (7760158943253).

21211101111099 is a wasteful number, since it uses less digits than its factorization.

21211101111099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172447976557.

The product of its (nonzero) digits is 324, while the sum is 30.

The spelling of 21211101111099 in words is "twenty-one trillion, two hundred eleven billion, one hundred one million, one hundred eleven thousand, ninety-nine".