21002111000002 has 32 divisors (see below), whose sum is σ = 37423329307200. Its totient is φ = 8732110161600.

The previous prime is 21002110999997. The next prime is 21002111000069. The reversal of 21002111000002 is 20000011120012.

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, 866268649 + ... + 866292892.

It is an arithmetic number, because the mean of its divisors is an integer number (1169479040850).

Almost surely, 2^{21002111000002} is an apocalyptic number.

21002111000002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21002111000002 is a deficient number, since it is larger than the sum of its proper divisors (16421218307198).

21002111000002 is a wasteful number, since it uses less digits than its factorization.

21002111000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732561602.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21002111000002 its reverse (20000011120012), we get a palindrome (41002122120014).

The spelling of 21002111000002 in words is "twenty-one trillion, two billion, one hundred eleven million, two", and thus it is an aban number.