21010110201099 has 12 divisors (see below), whose sum is σ = 30348106975576. Its totient is φ = 14006661664032.

The previous prime is 21010110201071. The next prime is 21010110201107. The reversal of 21010110201099 is 99010201101012.

It is not a de Polignac number, because 21010110201099 - 2⁷ = 21010110200971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010110201029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4819642 + ... + 8077695.

Almost surely, 2^{21010110201099} is an apocalyptic number.

21010110201099 is a deficient number, since it is larger than the sum of its proper divisors (9337996774477).

21010110201099 is a wasteful number, since it uses less digits than its factorization.

21010110201099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13078346 (or 13078343 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 21010110201099 in words is "twenty-one trillion, ten billion, one hundred ten million, two hundred one thousand, ninety-nine".