1230221222120 has 64 divisors (see below), whose sum is σ = 3029281640640. Its totient is φ = 445923878400.

The previous prime is 1230221222117. The next prime is 1230221222123. The reversal of 1230221222120 is 212221220321.

It is an interprime number because it is at equal distance from previous prime (1230221222117) and next prime (1230221222123).

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 = 1230221222092 and 1230221222101.

It is not an unprimeable number, because it can be changed into a prime (1230221222123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4328666 + ... + 4604105.

It is an arithmetic number, because the mean of its divisors is an integer number (47332525635).

Almost surely, 2^{1230221222120} is an apocalyptic number.

1230221222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230221222120 is an abundant number, since it is smaller than the sum of its proper divisors (1799060418520).

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

1230221222120 is a wasteful number, since it uses less digits than its factorization.

1230221222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933106 (or 8933102 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1230221222120 its reverse (212221220321), we get a palindrome (1442442442441).

The spelling of 1230221222120 in words is "one trillion, two hundred thirty billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty".