21302123222102 has 4 divisors (see below), whose sum is σ = 31953184833156. Its totient is φ = 10651061611050.

The previous prime is 21302123222101. The next prime is 21302123222137. The reversal of 21302123222102 is 20122232120312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302123222101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325530805524 + ... + 5325530805527.

It is an arithmetic number, because the mean of its divisors is an integer number (7988296208289).

Almost surely, 2^{21302123222102} is an apocalyptic number.

21302123222102 is a deficient number, since it is larger than the sum of its proper divisors (10651061611054).

21302123222102 is a wasteful number, since it uses less digits than its factorization.

21302123222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651061611053.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21302123222102 its reverse (20122232120312), we get a palindrome (41424355342414).

The spelling of 21302123222102 in words is "twenty-one trillion, three hundred two billion, one hundred twenty-three million, two hundred twenty-two thousand, one hundred two".