21231222203102 has 8 divisors (see below), whose sum is σ = 31848835416456. Its totient is φ = 10614943730952.

The previous prime is 21231222203083. The next prime is 21231222203179. The reversal of 21231222203102 is 20130222213212.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333645533 + ... + 333709160.

It is an arithmetic number, because the mean of its divisors is an integer number (3981104427057).

Almost surely, 2^{21231222203102} is an apocalyptic number.

21231222203102 is a deficient number, since it is larger than the sum of its proper divisors (10617613213354).

21231222203102 is a wasteful number, since it uses less digits than its factorization.

21231222203102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667370602.

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

Adding to 21231222203102 its reverse (20130222213212), we get a palindrome (41361444416314).

The spelling of 21231222203102 in words is "twenty-one trillion, two hundred thirty-one billion, two hundred twenty-two million, two hundred three thousand, one hundred two".