21201011102 has 8 divisors (see below), whose sum is σ = 31805589816. Its totient is φ = 10599147832.

The previous prime is 21201011087. The next prime is 21201011141. The reversal of 21201011102 is 20111010212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659228 + ... + 690639.

It is an arithmetic number, because the mean of its divisors is an integer number (3975698727).

Almost surely, 2^21201011102 is an apocalyptic number.

21201011102 is a deficient number, since it is larger than the sum of its proper divisors (10604578714).

21201011102 is a wasteful number, since it uses less digits than its factorization.

21201011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357722.

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

Adding to 21201011102 its reverse (20111010212), we get a palindrome (41312021314).

The spelling of 21201011102 in words is "twenty-one billion, two hundred one million, eleven thousand, one hundred two".