2002022122221 has 12 divisors (see below), whose sum is σ = 3154701526080. Its totient is φ = 1213346740680.

The previous prime is 2002022122181. The next prime is 2002022122229. The reversal of 2002022122221 is 1222212202002.

2002022122221 is a `hidden beast` number, since 200 + 2 + 0 + 221 + 22 + 221 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2002022122221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002022122194 and 2002022122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002022122229) 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 11 ways as a sum of consecutive naturals, for example, 10111222741 + ... + 10111222938.

It is an arithmetic number, because the mean of its divisors is an integer number (262891793840).

Almost surely, 2^{2002022122221} is an apocalyptic number.

It is an amenable number.

2002022122221 is a deficient number, since it is larger than the sum of its proper divisors (1152679403859).

2002022122221 is a wasteful number, since it uses less digits than its factorization.

2002022122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20222445696 (or 20222445693 counting only the distinct ones).

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

Adding to 2002022122221 its reverse (1222212202002), we get a palindrome (3224234324223).

The spelling of 2002022122221 in words is "two trillion, two billion, twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".