21101110202 has 8 divisors (see below), whose sum is σ = 33027824736. Its totient is φ = 10091835292.

The previous prime is 21101110099. The next prime is 21101110207. The reversal of 21101110202 is 20201110112.

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

It is not an unprimeable number, because it can be changed into a prime (21101110207) 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, 229359848 + ... + 229359939.

It is an arithmetic number, because the mean of its divisors is an integer number (4128478092).

Almost surely, 2^21101110202 is an apocalyptic number.

21101110202 is a deficient number, since it is larger than the sum of its proper divisors (11926714534).

21101110202 is a wasteful number, since it uses less digits than its factorization.

21101110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458719812.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21101110202 its reverse (20201110112), we get a palindrome (41302220314).

The spelling of 21101110202 in words is "twenty-one billion, one hundred one million, one hundred ten thousand, two hundred two".