1213202043020 has 48 divisors (see below), whose sum is σ = 2942825927328. Its totient is φ = 415213532160.

The previous prime is 1213202043007. The next prime is 1213202043047. The reversal of 1213202043020 is 203402023121.

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 = 1213202042983 and 1213202043001.

It is an unprimeable number.

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, 162189047 + ... + 162196526.

It is an arithmetic number, because the mean of its divisors is an integer number (61308873486).

Almost surely, 2^{1213202043020} is an apocalyptic number.

1213202043020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213202043020 is an abundant number, since it is smaller than the sum of its proper divisors (1729623884308).

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

1213202043020 is a wasteful number, since it uses less digits than its factorization.

1213202043020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324385610 (or 324385608 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1213202043020 its reverse (203402023121), we get a palindrome (1416604066141).

The spelling of 1213202043020 in words is "one trillion, two hundred thirteen billion, two hundred two million, forty-three thousand, twenty".