222020212121021 has 8 divisors (see below), whose sum is σ = 238115023924320. Its totient is φ = 206366354065872.

The previous prime is 222020212120913. The next prime is 222020212121051. The reversal of 222020212121021 is 120121212020222.

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-222020212121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222020212120984 and 222020212121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222020212121051) 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, 110238435995 + ... + 110238438008.

It is an arithmetic number, because the mean of its divisors is an integer number (29764377990540).

Almost surely, 2^{222020212121021} is an apocalyptic number.

It is an amenable number.

222020212121021 is a deficient number, since it is larger than the sum of its proper divisors (16094811803299).

222020212121021 is a wasteful number, since it uses less digits than its factorization.

222020212121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220476874075.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222020212121021 its reverse (120121212020222), we get a palindrome (342141424141243).

The spelling of 222020212121021 in words is "two hundred twenty-two trillion, twenty billion, two hundred twelve million, one hundred twenty-one thousand, twenty-one".