21100113411 has 8 divisors (see below), whose sum is σ = 30297598800. Its totient is φ = 12984685152.

The previous prime is 21100113407. The next prime is 21100113421. The reversal of 21100113411 is 11431100112.

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

It is not a de Polignac number, because 21100113411 - 2² = 21100113407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100113421) 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, 270514236 + ... + 270514313.

It is an arithmetic number, because the mean of its divisors is an integer number (3787199850).

Almost surely, 2^21100113411 is an apocalyptic number.

21100113411 is a deficient number, since it is larger than the sum of its proper divisors (9197485389).

21100113411 is a wasteful number, since it uses less digits than its factorization.

21100113411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541028565.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21100113411 its reverse (11431100112), we get a palindrome (32531213523).

The spelling of 21100113411 in words is "twenty-one billion, one hundred million, one hundred thirteen thousand, four hundred eleven".