21120111112102 has 8 divisors (see below), whose sum is σ = 32702107528512. Its totient is φ = 10219408602600.

The previous prime is 21120111112081. The next prime is 21120111112207. The reversal of 21120111112102 is 20121111102112.

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, 170323476649 + ... + 170323476772.

It is an arithmetic number, because the mean of its divisors is an integer number (4087763441064).

Almost surely, 2^{21120111112102} is an apocalyptic number.

21120111112102 is a deficient number, since it is larger than the sum of its proper divisors (11581996416410).

21120111112102 is a wasteful number, since it uses less digits than its factorization.

21120111112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340646953454.

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

Adding to 21120111112102 its reverse (20121111102112), we get a palindrome (41241222214214).

The spelling of 21120111112102 in words is "twenty-one trillion, one hundred twenty billion, one hundred eleven million, one hundred twelve thousand, one hundred two".