121122120000 has 420 divisors, whose sum is σ = 465861501600. Its totient is φ = 27683712000.

The previous prime is 121122119939. The next prime is 121122120029. The reversal of 121122120000 is 21221121.

121122120000 is nontrivially palindromic in base 9.

It is a tau number, because it is divible by the number of its divisors (420).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5869701 + ... + 5890299.

Almost surely, 2^121122120000 is an apocalyptic number.

121122120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232930750800).

121122120000 is an abundant number, since it is smaller than the sum of its proper divisors (344739381600).

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

121122120000 is an equidigital number, since it uses as much as digits as its factorization.

121122120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20648 (or 20616 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121122120000 its reverse (21221121), we get a palindrome (121143341121).

The spelling of 121122120000 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand".