21202201222000 has 40 divisors (see below), whose sum is σ = 51266922559632. Its totient is φ = 8480880488000.

The previous prime is 21202201221937. The next prime is 21202201222003. The reversal of 21202201222000 is 22210220212.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202201222003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5300548306 + ... + 5300552305.

Almost surely, 2^{21202201222000} is an apocalyptic number.

21202201222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21202201222000 is an abundant number, since it is smaller than the sum of its proper divisors (30064721337632).

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

21202201222000 is a wasteful number, since it uses less digits than its factorization.

21202201222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601100634 (or 10601100618 counting only the distinct ones).

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

Adding to 21202201222000 its reverse (22210220212), we get a palindrome (21224411442212).

The spelling of 21202201222000 in words is "twenty-one trillion, two hundred two billion, two hundred one million, two hundred twenty-two thousand".