21002112112202 has 16 divisors (see below), whose sum is σ = 33929103294240. Its totient is φ = 9692535514032.

The previous prime is 21002112112193. The next prime is 21002112112211. The reversal of 21002112112202 is 20221121120012.

It is an interprime number because it is at equal distance from previous prime (21002112112193) and next prime (21002112112211).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30781028 + ... + 31455935.

It is an arithmetic number, because the mean of its divisors is an integer number (2120568955890).

Almost surely, 2^{21002112112202} is an apocalyptic number.

21002112112202 is a deficient number, since it is larger than the sum of its proper divisors (12926991182038).

21002112112202 is a wasteful number, since it uses less digits than its factorization.

21002112112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62249957.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21002112112202 its reverse (20221121120012), we get a palindrome (41223233232214).

The spelling of 21002112112202 in words is "twenty-one trillion, two billion, one hundred twelve million, one hundred twelve thousand, two hundred two".