121222102002120 has 224 divisors, whose sum is σ = 467357170057920. Its totient is φ = 27707908982400.

The previous prime is 121222102002049. The next prime is 121222102002121. The reversal of 121222102002120 is 21200201222121.

It is a happy number.

121222102002120 is a `hidden beast` number, since 1 + 21 + 22 + 210 + 200 + 212 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121222102002093 and 121222102002102.

It is not an unprimeable number, because it can be changed into a prime (121222102002121) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 296734206 + ... + 297142445.

Almost surely, 2^{121222102002120} is an apocalyptic number.

121222102002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222102002120 is an abundant number, since it is smaller than the sum of its proper divisors (346135068055800).

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

121222102002120 is an equidigital number, since it uses as much as digits as its factorization.

121222102002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593876687 (or 593876668 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222102002120 its reverse (21200201222121), we get a palindrome (142422303224241).

The spelling of 121222102002120 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred two million, two thousand, one hundred twenty".