21113112201 has 8 divisors (see below), whose sum is σ = 28151777664. Its totient is φ = 14074927440.

The previous prime is 21113112199. The next prime is 21113112211. The reversal of 21113112201 is 10221131112.

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

It is not a de Polignac number, because 21113112201 - 2¹ = 21113112199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113112211) 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, 730 + ... + 205491.

It is an arithmetic number, because the mean of its divisors is an integer number (3518972208).

Almost surely, 2^21113112201 is an apocalyptic number.

It is an amenable number.

21113112201 is a deficient number, since it is larger than the sum of its proper divisors (7038665463).

21113112201 is a wasteful number, since it uses less digits than its factorization.

21113112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240351.

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

Adding to 21113112201 its reverse (10221131112), we get a palindrome (31334243313).

The spelling of 21113112201 in words is "twenty-one billion, one hundred thirteen million, one hundred twelve thousand, two hundred one".