21221131102102 has 8 divisors (see below), whose sum is σ = 31848801278112. Its totient is φ = 10604864009400.

The previous prime is 21221131102057. The next prime is 21221131102109. The reversal of 21221131102102 is 20120113112212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21221131102102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221131102109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2850766174 + ... + 2850773617.

It is an arithmetic number, because the mean of its divisors is an integer number (3981100159764).

Almost surely, 2^{21221131102102} is an apocalyptic number.

21221131102102 is a deficient number, since it is larger than the sum of its proper divisors (10627670176010).

21221131102102 is a wasteful number, since it uses less digits than its factorization.

21221131102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701541654.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21221131102102 its reverse (20120113112212), we get a palindrome (41341244214314).

The spelling of 21221131102102 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred thirty-one million, one hundred two thousand, one hundred two".