21321011102 has 8 divisors (see below), whose sum is σ = 32280409656. Its totient is φ = 10560874552.

The previous prime is 21321011053. The next prime is 21321011119. The reversal of 21321011102 is 20111012312.

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, 49815233 + ... + 49815660.

It is an arithmetic number, because the mean of its divisors is an integer number (4035051207).

Almost surely, 2^21321011102 is an apocalyptic number.

21321011102 is a deficient number, since it is larger than the sum of its proper divisors (10959398554).

21321011102 is a wasteful number, since it uses less digits than its factorization.

21321011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99631002.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21321011102 its reverse (20111012312), we get a palindrome (41432023414).

The spelling of 21321011102 in words is "twenty-one billion, three hundred twenty-one million, eleven thousand, one hundred two".