121120220000 has 240 divisors, whose sum is σ = 322488270720. Its totient is φ = 44499456000.

The previous prime is 121120219993. The next prime is 121120220027. The reversal of 121120220000 is 22021121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 57978956 + ... + 57981044.

It is an arithmetic number, because the mean of its divisors is an integer number (1343701128).

Almost surely, 2^121120220000 is an apocalyptic number.

121120220000 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 121120220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161244135360).

121120220000 is an abundant number, since it is smaller than the sum of its proper divisors (201368050720).

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

121120220000 is a wasteful number, since it uses less digits than its factorization.

121120220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355 (or 2332 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121120220000 its reverse (22021121), we get a palindrome (121142241121).

The spelling of 121120220000 in words is "one hundred twenty-one billion, one hundred twenty million, two hundred twenty thousand".