222200022121 has 72 divisors (see below), whose sum is σ = 296153159904. Its totient is φ = 164837312640.

The previous prime is 222200022097. The next prime is 222200022131. The reversal of 222200022121 is 121220002222.

222200022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-222200022121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222200022095 and 222200022104.

It is not an unprimeable number, because it can be changed into a prime (222200022131) 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 71 ways as a sum of consecutive naturals, for example, 64723021 + ... + 64726453.

It is an arithmetic number, because the mean of its divisors is an integer number (4113238332).

Almost surely, 2^222200022121 is an apocalyptic number.

It is an amenable number.

222200022121 is a deficient number, since it is larger than the sum of its proper divisors (73953137783).

222200022121 is a wasteful number, since it uses less digits than its factorization.

222200022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731 (or 3701 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222200022121 its reverse (121220002222), we get a palindrome (343420024343).

The spelling of 222200022121 in words is "two hundred twenty-two billion, two hundred million, twenty-two thousand, one hundred twenty-one".