21000002112102 has 32 divisors (see below), whose sum is σ = 47611340824320. Its totient is φ = 6121458105120.

The previous prime is 21000002112097. The next prime is 21000002112211. The reversal of 21000002112102 is 20121120000012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7085019474 + ... + 7085022437.

It is an arithmetic number, because the mean of its divisors is an integer number (1487854400760).

Almost surely, 2^{21000002112102} is an apocalyptic number.

21000002112102 is an abundant number, since it is smaller than the sum of its proper divisors (26611338712218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000002112102 is a wasteful number, since it uses less digits than its factorization.

21000002112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14170041948.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21000002112102 its reverse (20121120000012), we get a palindrome (41121122112114).

The spelling of 21000002112102 in words is "twenty-one trillion, two million, one hundred twelve thousand, one hundred two".