121222020120120 has 96 divisors (see below), whose sum is σ = 394119068166720. Its totient is φ = 32313769240320.

The previous prime is 121222020120053. The next prime is 121222020120133. The reversal of 121222020120120 is 21021020222121.

It is a happy number.

121222020120120 is a `hidden beast` number, since 1 + 21 + 2 + 220 + 201 + 201 + 20 = 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 = 121222020120093 and 121222020120102.

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 23 ways as a sum of consecutive naturals, for example, 62072479 + ... + 63995598.

It is an arithmetic number, because the mean of its divisors is an integer number (4105406960070).

Almost surely, 2^{121222020120120} is an apocalyptic number.

121222020120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222020120120 is an abundant number, since it is smaller than the sum of its proper divisors (272897048046600).

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

121222020120120 is a wasteful number, since it uses less digits than its factorization.

121222020120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126070765 (or 126070758 counting only the distinct ones).

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

Adding to 121222020120120 its reverse (21021020222121), we get a palindrome (142243040342241).

The spelling of 121222020120120 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, twenty million, one hundred twenty thousand, one hundred twenty".