2020220001221 has 4 divisors (see below), whose sum is σ = 2108055653472. Its totient is φ = 1932384348972.

The previous prime is 2020220001209. The next prime is 2020220001223. The reversal of 2020220001221 is 1221000220202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2020220001221 - 2³⁰ = 2019146259397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020220001196 and 2020220001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020220001223) 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, 43917826091 + ... + 43917826136.

It is an arithmetic number, because the mean of its divisors is an integer number (527013913368).

Almost surely, 2^{2020220001221} is an apocalyptic number.

It is an amenable number.

2020220001221 is a deficient number, since it is larger than the sum of its proper divisors (87835652251).

2020220001221 is an equidigital number, since it uses as much as digits as its factorization.

2020220001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87835652250.

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

Adding to 2020220001221 its reverse (1221000220202), we get a palindrome (3241220221423).

The spelling of 2020220001221 in words is "two trillion, twenty billion, two hundred twenty million, one thousand, two hundred twenty-one".