2202022021221 has 72 divisors (see below), whose sum is σ = 3582675063968. Its totient is φ = 1301616993600.

The previous prime is 2202022021189. The next prime is 2202022021229. The reversal of 2202022021221 is 1221202202022.

2202022021221 is a `hidden beast` number, since 2 + 202 + 0 + 220 + 21 + 221 = 666.

It is not a de Polignac number, because 2202022021221 - 2⁵ = 2202022021189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202022021194 and 2202022021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202022021229) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 32323431 + ... + 32391483.

Almost surely, 2^{2202022021221} is an apocalyptic number.

It is an amenable number.

2202022021221 is a deficient number, since it is larger than the sum of its proper divisors (1380653042747).

2202022021221 is a wasteful number, since it uses less digits than its factorization.

2202022021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68815 (or 68801 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2202022021221 its reverse (1221202202022), we get a palindrome (3423224223243).

The spelling of 2202022021221 in words is "two trillion, two hundred two billion, twenty-two million, twenty-one thousand, two hundred twenty-one".