121212000222 has 16 divisors (see below), whose sum is σ = 248976000912. Its totient is φ = 39312000000.

The previous prime is 121212000211. The next prime is 121212000223. The reversal of 121212000222 is 222000212121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212000223) 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, 272999779 + ... + 273000222.

It is an arithmetic number, because the mean of its divisors is an integer number (15561000057).

Almost surely, 2^121212000222 is an apocalyptic number.

121212000222 is an abundant number, since it is smaller than the sum of its proper divisors (127764000690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121212000222 is a wasteful number, since it uses less digits than its factorization.

121212000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546000043.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121212000222 its reverse (222000212121), we get a palindrome (343212212343).

The spelling of 121212000222 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred twenty-two", and thus it is an aban number.