121102222120 has 64 divisors (see below), whose sum is σ = 298744848000. Its totient is φ = 43815847680.

The previous prime is 121102222103. The next prime is 121102222123. The reversal of 121102222120 is 21222201121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121102222094 and 121102222103.

It is not an unprimeable number, because it can be changed into a prime (121102222123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603979 + ... + 779098.

It is an arithmetic number, because the mean of its divisors is an integer number (4667888250).

Almost surely, 2^121102222120 is an apocalyptic number.

121102222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102222120 is an abundant number, since it is smaller than the sum of its proper divisors (177642625880).

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

121102222120 is a wasteful number, since it uses less digits than its factorization.

121102222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383298 (or 1383294 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121102222120 its reverse (21222201121), we get a palindrome (142324423241).

The spelling of 121102222120 in words is "one hundred twenty-one billion, one hundred two million, two hundred twenty-two thousand, one hundred twenty".