21201100112002 has 8 divisors (see below), whose sum is σ = 32541223427856. Its totient is φ = 10354025636052.

The previous prime is 21201100111987. The next prime is 21201100112009. The reversal of 21201100112002 is 20021100110212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21201100112009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123262209868 + ... + 123262210039.

It is an arithmetic number, because the mean of its divisors is an integer number (4067652928482).

Almost surely, 2^{21201100112002} is an apocalyptic number.

21201100112002 is a deficient number, since it is larger than the sum of its proper divisors (11340123315854).

21201100112002 is a wasteful number, since it uses less digits than its factorization.

21201100112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246524419952.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21201100112002 its reverse (20021100110212), we get a palindrome (41222200222214).

The spelling of 21201100112002 in words is "twenty-one trillion, two hundred one billion, one hundred million, one hundred twelve thousand, two".