222222012121 has 8 divisors (see below), whose sum is σ = 223993764864. Its totient is φ = 220450602960.

The previous prime is 222222012097. The next prime is 222222012137. The reversal of 222222012121 is 121210222222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222222012121 is a prime.

It is a super-2 number, since 2×222222012121² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222222012521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1301751 + ... + 1462531.

It is an arithmetic number, because the mean of its divisors is an integer number (27999220608).

Almost surely, 2^222222012121 is an apocalyptic number.

It is an amenable number.

222222012121 is a deficient number, since it is larger than the sum of its proper divisors (1771752743).

222222012121 is a wasteful number, since it uses less digits than its factorization.

222222012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171791.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222222012121 its reverse (121210222222), we get a palindrome (343432234343).

The spelling of 222222012121 in words is "two hundred twenty-two billion, two hundred twenty-two million, twelve thousand, one hundred twenty-one".