10021122122221 has 8 divisors (see below), whose sum is σ = 11847632065920. Its totient is φ = 8293342445808.

The previous prime is 10021122122189. The next prime is 10021122122237. The reversal of 10021122122221 is 12222122112001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10021122122221 - 2⁵ = 10021122122189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021122122281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24682566601 + ... + 24682567006.

It is an arithmetic number, because the mean of its divisors is an integer number (1480954008240).

Almost surely, 2^{10021122122221} is an apocalyptic number.

It is an amenable number.

10021122122221 is a deficient number, since it is larger than the sum of its proper divisors (1826509943699).

10021122122221 is an equidigital number, since it uses as much as digits as its factorization.

10021122122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49365133643.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10021122122221 its reverse (12222122112001), we get a palindrome (22243244234222).

The spelling of 10021122122221 in words is "ten trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".