222120112020221 has 8 divisors (see below), whose sum is σ = 223162430909280. Its totient is φ = 221078422366992.

The previous prime is 222120112020211. The next prime is 222120112020259. The reversal of 222120112020221 is 122020211021222.

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-222120112020221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222120112020193 and 222120112020202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120112020211) 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, 156601295 + ... + 158013308.

It is an arithmetic number, because the mean of its divisors is an integer number (27895303863660).

Almost surely, 2^{222120112020221} is an apocalyptic number.

It is an amenable number.

222120112020221 is a deficient number, since it is larger than the sum of its proper divisors (1042318889059).

222120112020221 is a wasteful number, since it uses less digits than its factorization.

222120112020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314617915.

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

Adding to 222120112020221 its reverse (122020211021222), we get a palindrome (344140323041443).

The spelling of 222120112020221 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred twelve million, twenty thousand, two hundred twenty-one".