222120212211021 has 16 divisors (see below), whose sum is σ = 307643962570560. Its totient is φ = 142380676865280.

The previous prime is 222120212211011. The next prime is 222120212211041. The reversal of 222120212211021 is 120112212021222.

It is not a de Polignac number, because 222120212211021 - 2¹⁵ = 222120212178253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120212211011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5296879215 + ... + 5296921148.

It is an arithmetic number, because the mean of its divisors is an integer number (19227747660660).

Almost surely, 2^{222120212211021} is an apocalyptic number.

It is an amenable number.

222120212211021 is a deficient number, since it is larger than the sum of its proper divisors (85523750359539).

222120212211021 is a wasteful number, since it uses less digits than its factorization.

222120212211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10593800636.

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

Adding to 222120212211021 its reverse (120112212021222), we get a palindrome (342232424232243).

The spelling of 222120212211021 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twelve million, two hundred eleven thousand, twenty-one".