121202221120 has 28 divisors (see below), whose sum is σ = 288612789804. Its totient is φ = 48480888320.

The previous prime is 121202221109. The next prime is 121202221169. The reversal of 121202221120 is 21122202121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60268286016 + 60933935104 = 245496^2 + 246848^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 121202221094 and 121202221103.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 189378151 + ... + 189378790.

Almost surely, 2^121202221120 is an apocalyptic number.

121202221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202221120 is an abundant number, since it is smaller than the sum of its proper divisors (167410568684).

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

121202221120 is an equidigital number, since it uses as much as digits as its factorization.

121202221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378756958 (or 378756948 counting only the distinct ones).

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

Adding to 121202221120 its reverse (21122202121), we get a palindrome (142324423241).

The spelling of 121202221120 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty-one thousand, one hundred twenty".