222222121011021 has 8 divisors (see below), whose sum is σ = 296296345759104. Its totient is φ = 148147988468480.

The previous prime is 222222121011013. The next prime is 222222121011043. The reversal of 222222121011021 is 120110121222222.

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 222222121011021 - 2³ = 222222121011013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222121011421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17216916 + ... + 27218861.

It is an arithmetic number, because the mean of its divisors is an integer number (37037043219888).

Almost surely, 2^{222222121011021} is an apocalyptic number.

It is an amenable number.

222222121011021 is a deficient number, since it is larger than the sum of its proper divisors (74074224748083).

222222121011021 is a wasteful number, since it uses less digits than its factorization.

222222121011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46102771.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 222222121011021 its reverse (120110121222222), we get a palindrome (342332242233243).

The spelling of 222222121011021 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, eleven thousand, twenty-one".