21001112002002 has 32 divisors (see below), whose sum is σ = 47812808355840. Its totient is φ = 6087278840720.

The previous prime is 21001112001983. The next prime is 21001112002019. The reversal of 21001112002002 is 20020021110012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6917360802 + ... + 6917363837.

It is an arithmetic number, because the mean of its divisors is an integer number (1494150261120).

Almost surely, 2^{21001112002002} is an apocalyptic number.

21001112002002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21001112002002 is an abundant number, since it is smaller than the sum of its proper divisors (26811696353838).

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

21001112002002 is a wasteful number, since it uses less digits than its factorization.

21001112002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13834724678.

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

Adding to 21001112002002 its reverse (20020021110012), we get a palindrome (41021133112014).

The spelling of 21001112002002 in words is "twenty-one trillion, one billion, one hundred twelve million, two thousand, two".