21320122102 has 8 divisors (see below), whose sum is σ = 31981887936. Its totient is φ = 10659492792.

The previous prime is 21320122097. The next prime is 21320122123. The reversal of 21320122102 is 20122102312.

It is a happy number.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235573 + ... + 313264.

It is an arithmetic number, because the mean of its divisors is an integer number (3997735992).

Almost surely, 2^21320122102 is an apocalyptic number.

21320122102 is a deficient number, since it is larger than the sum of its proper divisors (10661765834).

21320122102 is a wasteful number, since it uses less digits than its factorization.

21320122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568262.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21320122102 its reverse (20122102312), we get a palindrome (41442224414).

The spelling of 21320122102 in words is "twenty-one billion, three hundred twenty million, one hundred twenty-two thousand, one hundred two".