1213021331130 has 48 divisors (see below), whose sum is σ = 3386557516320. Its totient is φ = 277262018208.

The previous prime is 1213021331113. The next prime is 1213021331141. The reversal of 1213021331130 is 311331203121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1213021331097 and 1213021331106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412590820 + ... + 412593759.

It is an arithmetic number, because the mean of its divisors is an integer number (70553281590).

Almost surely, 2^{1213021331130} is an apocalyptic number.

1213021331130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213021331130 is an abundant number, since it is smaller than the sum of its proper divisors (2173536185190).

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

1213021331130 is a wasteful number, since it uses less digits than its factorization.

1213021331130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825184603 (or 825184596 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1213021331130 its reverse (311331203121), we get a palindrome (1524352534251).

The spelling of 1213021331130 in words is "one trillion, two hundred thirteen billion, twenty-one million, three hundred thirty-one thousand, one hundred thirty".