222030212121 has 48 divisors (see below), whose sum is σ = 344813040000. Its totient is φ = 137166441984.

The previous prime is 222030212113. The next prime is 222030212137. The reversal of 222030212121 is 121212030222.

222030212121 is a `hidden beast` number, since 2 + 220 + 302 + 121 + 21 = 666.

It is not a de Polignac number, because 222030212121 - 2³ = 222030212113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222030212094 and 222030212103.

It is not an unprimeable number, because it can be changed into a prime (222030212101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28176060 + ... + 28183938.

It is an arithmetic number, because the mean of its divisors is an integer number (7183605000).

Almost surely, 2^222030212121 is an apocalyptic number.

It is an amenable number.

222030212121 is a deficient number, since it is larger than the sum of its proper divisors (122782827879).

222030212121 is a wasteful number, since it uses less digits than its factorization.

222030212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10718 (or 10715 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222030212121 its reverse (121212030222), we get a palindrome (343242242343).

The spelling of 222030212121 in words is "two hundred twenty-two billion, thirty million, two hundred twelve thousand, one hundred twenty-one".