121220201120 has 96 divisors (see below), whose sum is σ = 291840978240. Its totient is φ = 47567349760.

The previous prime is 121220201119. The next prime is 121220201147. The reversal of 121220201120 is 21102022121.

It is a junction number, because it is equal to n+sod(n) for n = 121220201095 and 121220201104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4621964 + ... + 4648116.

It is an arithmetic number, because the mean of its divisors is an integer number (3040010190).

Almost surely, 2^121220201120 is an apocalyptic number.

121220201120 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 121220201120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145920489120).

121220201120 is an abundant number, since it is smaller than the sum of its proper divisors (170620777120).

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

121220201120 is a wasteful number, since it uses less digits than its factorization.

121220201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26718 (or 26710 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121220201120 its reverse (21102022121), we get a palindrome (142322223241).

The spelling of 121220201120 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred one thousand, one hundred twenty".