1213303122020 has 48 divisors (see below), whose sum is σ = 2781341756928. Its totient is φ = 440919452160.

The previous prime is 1213303122013. The next prime is 1213303122023. The reversal of 1213303122020 is 202213033121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1213303121983 and 1213303122001.

It is not an unprimeable number, because it can be changed into a prime (1213303122023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414997 + ... + 2104476.

It is an arithmetic number, because the mean of its divisors is an integer number (57944619936).

Almost surely, 2^{1213303122020} is an apocalyptic number.

1213303122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213303122020 is an abundant number, since it is smaller than the sum of its proper divisors (1568038634908).

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

1213303122020 is a wasteful number, since it uses less digits than its factorization.

1213303122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521060 (or 3521058 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1213303122020 its reverse (202213033121), we get a palindrome (1415516155141).

The spelling of 1213303122020 in words is "one trillion, two hundred thirteen billion, three hundred three million, one hundred twenty-two thousand, twenty".