121000000212222 has 64 divisors (see below), whose sum is σ = 248635178449920. Its totient is φ = 39228304212864.

The previous prime is 121000000212193. The next prime is 121000000212229. The reversal of 121000000212222 is 222212000000121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000000212229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10574144433 + ... + 10574155875.

It is an arithmetic number, because the mean of its divisors is an integer number (3884924663280).

Almost surely, 2^{121000000212222} is an apocalyptic number.

121000000212222 is an abundant number, since it is smaller than the sum of its proper divisors (127635178237698).

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

121000000212222 is a wasteful number, since it uses less digits than its factorization.

121000000212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25457.

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

Adding to 121000000212222 its reverse (222212000000121), we get a palindrome (343212000212343).

The spelling of 121000000212222 in words is "one hundred twenty-one trillion, two hundred twelve thousand, two hundred twenty-two".