21201100122202 has 96 divisors (see below), whose sum is σ = 43467791197824. Its totient is φ = 7623614275200.

The previous prime is 21201100122187. The next prime is 21201100122227. The reversal of 21201100122202 is 20222100110212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95057688 + ... + 95280460.

It is an arithmetic number, because the mean of its divisors is an integer number (452789491644).

Almost surely, 2^{21201100122202} is an apocalyptic number.

21201100122202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21201100122202 is an abundant number, since it is smaller than the sum of its proper divisors (22266691075622).

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

21201100122202 is a wasteful number, since it uses less digits than its factorization.

21201100122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229604 (or 229597 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21201100122202 its reverse (20222100110212), we get a palindrome (41423200232414).

The spelling of 21201100122202 in words is "twenty-one trillion, two hundred one billion, one hundred million, one hundred twenty-two thousand, two hundred two".