220021102121 has 8 divisors (see below), whose sum is σ = 222867916800. Its totient is φ = 217191699648.

The previous prime is 220021102109. The next prime is 220021102123. The reversal of 220021102121 is 121201120022.

220021102121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 220021102121 - 2¹⁴ = 220021085737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220021102096 and 220021102105.

It is not an unprimeable number, because it can be changed into a prime (220021102123) 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 7 ways as a sum of consecutive naturals, for example, 4327616 + ... + 4378161.

It is an arithmetic number, because the mean of its divisors is an integer number (27858489600).

Almost surely, 2^220021102121 is an apocalyptic number.

It is an amenable number.

220021102121 is a deficient number, since it is larger than the sum of its proper divisors (2846814679).

220021102121 is a wasteful number, since it uses less digits than its factorization.

220021102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8706103.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220021102121 its reverse (121201120022), we get a palindrome (341222222143).

The spelling of 220021102121 in words is "two hundred twenty billion, twenty-one million, one hundred two thousand, one hundred twenty-one".