21222313202000 has 40 divisors (see below), whose sum is σ = 51315553327272. Its totient is φ = 8488925280000.

The previous prime is 21222313201961. The next prime is 21222313202021. The reversal of 21222313202000 is 20231322212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50020217104 + 21172292984896 = 223652^2 + 4601336^2 .

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 (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5305576301 + ... + 5305580300.

Almost surely, 2^{21222313202000} is an apocalyptic number.

21222313202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222313202000 is an abundant number, since it is smaller than the sum of its proper divisors (30093240125272).

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

21222313202000 is a wasteful number, since it uses less digits than its factorization.

21222313202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10611156624 (or 10611156608 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21222313202000 its reverse (20231322212), we get a palindrome (21242544524212).

The spelling of 21222313202000 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred thirteen million, two hundred two thousand".