1221203330130 has 32 divisors (see below), whose sum is σ = 3349586277504. Its totient is φ = 279132189696.

The previous prime is 1221203330099. The next prime is 1221203330143. The reversal of 1221203330130 is 310333021221.

It is a super-3 number, since 3×1221203330130³ (a number of 37 digits) contains 333 as substring.

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 = 1221203330097 and 1221203330106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2907626767 + ... + 2907627186.

It is an arithmetic number, because the mean of its divisors is an integer number (104674571172).

Almost surely, 2^{1221203330130} is an apocalyptic number.

1221203330130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221203330130 is an abundant number, since it is smaller than the sum of its proper divisors (2128382947374).

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

1221203330130 is a wasteful number, since it uses less digits than its factorization.

1221203330130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815253970.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1221203330130 its reverse (310333021221), we get a palindrome (1531536351351).

The spelling of 1221203330130 in words is "one trillion, two hundred twenty-one billion, two hundred three million, three hundred thirty thousand, one hundred thirty".