1213020020120 has 32 divisors (see below), whose sum is σ = 2729335957920. Its totient is φ = 485200734720.

The previous prime is 1213020020119. The next prime is 1213020020129. The reversal of 1213020020120 is 210200203121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1213020020095 and 1213020020104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213020020129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3062240 + ... + 3435600.

It is an arithmetic number, because the mean of its divisors is an integer number (85291748685).

Almost surely, 2^{1213020020120} is an apocalyptic number.

1213020020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213020020120 is an abundant number, since it is smaller than the sum of its proper divisors (1516315937800).

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

1213020020120 is a wasteful number, since it uses less digits than its factorization.

1213020020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454595 (or 454591 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1213020020120 its reverse (210200203121), we get a palindrome (1423220223241).

The spelling of 1213020020120 in words is "one trillion, two hundred thirteen billion, twenty million, twenty thousand, one hundred twenty".