21202201201100 has 18 divisors (see below), whose sum is σ = 46008776606604. Its totient is φ = 8480880480400.

The previous prime is 21202201201079. The next prime is 21202201201123. The reversal of 21202201201100 is 110210220212.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106011005906 + ... + 106011006105.

Almost surely, 2^{21202201201100} is an apocalyptic number.

21202201201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202201201100 is an abundant number, since it is smaller than the sum of its proper divisors (24806575405504).

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

21202201201100 is a wasteful number, since it uses less digits than its factorization.

21202201201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212022012025 (or 212022012018 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21202201201100 its reverse (110210220212), we get a palindrome (21312411421312).

The spelling of 21202201201100 in words is "twenty-one trillion, two hundred two billion, two hundred one million, two hundred one thousand, one hundred".