21202210202200 has 48 divisors (see below), whose sum is σ = 49296838025880. Its totient is φ = 8480591727360.

The previous prime is 21202210202177. The next prime is 21202210202267. The reversal of 21202210202200 is 220201220212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4036012 + ... + 7661188.

Almost surely, 2^{21202210202200} is an apocalyptic number.

21202210202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202210202200 is an abundant number, since it is smaller than the sum of its proper divisors (28094627823680).

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

21202210202200 is a wasteful number, since it uses less digits than its factorization.

21202210202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654436 (or 3654427 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21202210202200 its reverse (220201220212), we get a palindrome (21422411422412).

The spelling of 21202210202200 in words is "twenty-one trillion, two hundred two billion, two hundred ten million, two hundred two thousand, two hundred".