21201201100002 has 64 divisors (see below), whose sum is σ = 55163825362944. Its totient is φ = 5267379152640.

The previous prime is 21201201099997. The next prime is 21201201100019. The reversal of 21201201100002 is 20000110210212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 997599063 + ... + 997620314.

It is an arithmetic number, because the mean of its divisors is an integer number (861934771296).

Almost surely, 2^{21201201100002} is an apocalyptic number.

21201201100002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21201201100002 is an abundant number, since it is smaller than the sum of its proper divisors (33962624262942).

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

21201201100002 is a wasteful number, since it uses less digits than its factorization.

21201201100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995219423.

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

Adding to 21201201100002 its reverse (20000110210212), we get a palindrome (41201311310214).

The spelling of 21201201100002 in words is "twenty-one trillion, two hundred one billion, two hundred one million, one hundred thousand, two".