121220001222 has 8 divisors (see below), whose sum is σ = 242440002456. Its totient is φ = 40406667072.

The previous prime is 121220001211. The next prime is 121220001223. The reversal of 121220001222 is 222100022121.

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

121220001222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220001223) 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 3 ways as a sum of consecutive naturals, for example, 10101666763 + ... + 10101666774.

It is an arithmetic number, because the mean of its divisors is an integer number (30305000307).

Almost surely, 2^121220001222 is an apocalyptic number.

121220001222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121220001222 is a wasteful number, since it uses less digits than its factorization.

121220001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20203333542.

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

Adding to 121220001222 its reverse (222100022121), we get a palindrome (343320023343).

The spelling of 121220001222 in words is "one hundred twenty-one billion, two hundred twenty million, one thousand, two hundred twenty-two".