121202002211220 has 192 divisors, whose sum is σ = 431334740067840. Its totient is φ = 27677967722496.

The previous prime is 121202002211207. The next prime is 121202002211281. The reversal of 121202002211220 is 22112200202121.

It is a happy number.

121202002211220 is a `hidden beast` number, since 1 + 2 + 1 + 20 + 200 + 221 + 1 + 220 = 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 = 121202002211193 and 121202002211202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10536357 + ... + 18799436.

It is an arithmetic number, because the mean of its divisors is an integer number (2246535104520).

Almost surely, 2^{121202002211220} is an apocalyptic number.

121202002211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202002211220 is an abundant number, since it is smaller than the sum of its proper divisors (310132737856620).

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

121202002211220 is a wasteful number, since it uses less digits than its factorization.

121202002211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29336911 (or 29336903 counting only the distinct ones).

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

Adding to 121202002211220 its reverse (22112200202121), we get a palindrome (143314202413341).

The spelling of 121202002211220 in words is "one hundred twenty-one trillion, two hundred two billion, two million, two hundred eleven thousand, two hundred twenty".