2202000221021 has 4 divisors (see below), whose sum is σ = 2214728546172. Its totient is φ = 2189271895872.

The previous prime is 2202000221011. The next prime is 2202000221027. The reversal of 2202000221021 is 1201220002022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1567476456121 + 634523764900 = 1251989^2 + 796570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2202000221021 - 2¹⁸ = 2201999958877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202000220987 and 2202000221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202000221027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6364162316 + ... + 6364162661.

It is an arithmetic number, because the mean of its divisors is an integer number (553682136543).

Almost surely, 2^{2202000221021} is an apocalyptic number.

It is an amenable number.

2202000221021 is a deficient number, since it is larger than the sum of its proper divisors (12728325151).

2202000221021 is a wasteful number, since it uses less digits than its factorization.

2202000221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12728325150.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2202000221021 its reverse (1201220002022), we get a palindrome (3403220223043).

The spelling of 2202000221021 in words is "two trillion, two hundred two billion, two hundred twenty-one thousand, twenty-one".