222120221111121 has 16 divisors (see below), whose sum is σ = 310945445928000. Its totient is φ = 140839996089408.

The previous prime is 222120221111093. The next prime is 222120221111183. The reversal of 222120221111121 is 121111122021222.

It is not a de Polignac number, because 222120221111121 - 2¹³ = 222120221102929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222120221151121) 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, 19053023946 + ... + 19053035603.

It is an arithmetic number, because the mean of its divisors is an integer number (19434090370500).

Almost surely, 2^{222120221111121} is an apocalyptic number.

It is an amenable number.

222120221111121 is a deficient number, since it is larger than the sum of its proper divisors (88825224816879).

222120221111121 is a wasteful number, since it uses less digits than its factorization.

222120221111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38106059648.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222120221111121 its reverse (121111122021222), we get a palindrome (343231343132343).

The spelling of 222120221111121 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".