121120222222220 has 96 divisors (see below), whose sum is σ = 279418974226560. Its totient is φ = 43825212887040.

The previous prime is 121120222222183. The next prime is 121120222222291. The reversal of 121120222222220 is 22222222021121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6323300 + ... + 16799540.

It is an arithmetic number, because the mean of its divisors is an integer number (2910614314860).

Almost surely, 2^{121120222222220} is an apocalyptic number.

121120222222220 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 121120222222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139709487113280).

121120222222220 is an abundant number, since it is smaller than the sum of its proper divisors (158298752004340).

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

121120222222220 is a wasteful number, since it uses less digits than its factorization.

121120222222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10477155 (or 10477153 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 121120222222220 its reverse (22222222021121), we get a palindrome (143342444243341).

The spelling of 121120222222220 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".