1321121130210 has 224 divisors, whose sum is σ = 4076710922880. Its totient is φ = 301824382464.

The previous prime is 1321121130209. The next prime is 1321121130211. The reversal of 1321121130210 is 120311211231.

1321121130210 is a `hidden beast` number, since 1 + 3 + 211 + 211 + 30 + 210 = 666.

It is an interprime number because it is at equal distance from previous prime (1321121130209) and next prime (1321121130211).

It is a super-2 number, since 2×1321121130210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1321121130211) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 133132309 + ... + 133142231.

Almost surely, 2^{1321121130210} is an apocalyptic number.

1321121130210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321121130210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038355461440).

1321121130210 is an abundant number, since it is smaller than the sum of its proper divisors (2755589792670).

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

1321121130210 is an equidigital number, since it uses as much as digits as its factorization.

1321121130210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12564 (or 12549 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1321121130210 its reverse (120311211231), we get a palindrome (1441432341441).

The spelling of 1321121130210 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-one million, one hundred thirty thousand, two hundred ten".