1212301320120 has 192 divisors, whose sum is σ = 4550992374240. Its totient is φ = 276603494400.

The previous prime is 1212301320073. The next prime is 1212301320133. The reversal of 1212301320120 is 210231032121.

1212301320120 is a `hidden beast` number, since 1 + 21 + 2 + 301 + 320 + 1 + 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 = 1212301320093 and 1212301320102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8936701 + ... + 9071340.

Almost surely, 2^{1212301320120} is an apocalyptic number.

1212301320120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212301320120 is an abundant number, since it is smaller than the sum of its proper divisors (3338691054120).

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

1212301320120 is a wasteful number, since it uses less digits than its factorization.

1212301320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18008086 (or 18008079 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1212301320120 its reverse (210231032121), we get a palindrome (1422532352241).

The spelling of 1212301320120 in words is "one trillion, two hundred twelve billion, three hundred one million, three hundred twenty thousand, one hundred twenty".