21001201100202 has 8 divisors (see below), whose sum is σ = 42002402200416. Its totient is φ = 7000400366732.

The previous prime is 21001201100197. The next prime is 21001201100213. The reversal of 21001201100202 is 20200110210012.

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

21001201100202 is an admirable number.

It is a super-2 number, since 2×21001201100202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750100091678 + ... + 1750100091689.

It is an arithmetic number, because the mean of its divisors is an integer number (5250300275052).

Almost surely, 2^{21001201100202} is an apocalyptic number.

21001201100202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21001201100202 is a wasteful number, since it uses less digits than its factorization.

21001201100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500200183372.

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

Adding to 21001201100202 its reverse (20200110210012), we get a palindrome (41201311310214).

The spelling of 21001201100202 in words is "twenty-one trillion, one billion, two hundred one million, one hundred thousand, two hundred two".