2021121220223 has 8 divisors (see below), whose sum is σ = 2318191644192. Its totient is φ = 1726135501536.

The previous prime is 2021121220201. The next prime is 2021121220229. The reversal of 2021121220223 is 3220221211202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021121220223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021121220195 and 2021121220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021121220229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521174240 + ... + 521178117.

It is an arithmetic number, because the mean of its divisors is an integer number (289773955524).

Almost surely, 2^{2021121220223} is an apocalyptic number.

2021121220223 is a deficient number, since it is larger than the sum of its proper divisors (297070423969).

2021121220223 is a wasteful number, since it uses less digits than its factorization.

2021121220223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042352641.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2021121220223 its reverse (3220221211202), we get a palindrome (5241342431425).

The spelling of 2021121220223 in words is "two trillion, twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-three".