121120222000 has 80 divisors (see below), whose sum is σ = 299100177792. Its totient is φ = 47417241600.

The previous prime is 121120221983. The next prime is 121120222001. The reversal of 121120222000 is 222021121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (121120222001) 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 15 ways as a sum of consecutive naturals, for example, 550257 + ... + 738256.

Almost surely, 2^121120222000 is an apocalyptic number.

121120222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120222000 is an abundant number, since it is smaller than the sum of its proper divisors (177979955792).

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

121120222000 is a wasteful number, since it uses less digits than its factorization.

121120222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288583 (or 1288567 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121120222000 its reverse (222021121), we get a palindrome (121342243121).

The spelling of 121120222000 in words is "one hundred twenty-one billion, one hundred twenty million, two hundred twenty-two thousand".