21113001106 has 8 divisors (see below), whose sum is σ = 31882049100. Its totient is φ = 10485651408.

The previous prime is 21113001101. The next prime is 21113001113. The reversal of 21113001106 is 60110031112.

It can be written as a sum of positive squares in 2 ways, for example, as 20695411881 + 417589225 = 143859^2 + 20435^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21113001106.

It is not an unprimeable number, because it can be changed into a prime (21113001101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35424201 + ... + 35424796.

Almost surely, 2^21113001106 is an apocalyptic number.

21113001106 is a deficient number, since it is larger than the sum of its proper divisors (10769047994).

21113001106 is a wasteful number, since it uses less digits than its factorization.

21113001106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70849148.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21113001106 its reverse (60110031112), we get a palindrome (81223032218).

The spelling of 21113001106 in words is "twenty-one billion, one hundred thirteen million, one thousand, one hundred six".