1213000333020 has 192 divisors, whose sum is σ = 4321370188800. Its totient is φ = 276712070400.

The previous prime is 1213000333009. The next prime is 1213000333033. The reversal of 1213000333020 is 203330003121.

1213000333020 is a `hidden beast` number, since 12 + 1 + 300 + 0 + 3 + 330 + 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 = 1213000332984 and 1213000333002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1608795 + ... + 2239245.

It is an arithmetic number, because the mean of its divisors is an integer number (22507136400).

Almost surely, 2^{1213000333020} is an apocalyptic number.

1213000333020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213000333020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2160685094400).

1213000333020 is an abundant number, since it is smaller than the sum of its proper divisors (3108369855780).

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

1213000333020 is a wasteful number, since it uses less digits than its factorization.

1213000333020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630985 (or 630977 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 1213000333020 its reverse (203330003121), we get a palindrome (1416330336141).

The spelling of 1213000333020 in words is "one trillion, two hundred thirteen billion, three hundred thirty-three thousand, twenty".