1220103231220 has 24 divisors (see below), whose sum is σ = 2562385341600. Its totient is φ = 488009186592.

The previous prime is 1220103231161. The next prime is 1220103231233. The reversal of 1220103231220 is 221323010221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693810 + ... + 2304169.

It is an arithmetic number, because the mean of its divisors is an integer number (106766055900).

Almost surely, 2^{1220103231220} is an apocalyptic number.

1220103231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220103231220 is an abundant number, since it is smaller than the sum of its proper divisors (1342282110380).

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

1220103231220 is a wasteful number, since it uses less digits than its factorization.

1220103231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013247 (or 4013245 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1220103231220 its reverse (221323010221), we get a palindrome (1441426241441).

The spelling of 1220103231220 in words is "one trillion, two hundred twenty billion, one hundred three million, two hundred thirty-one thousand, two hundred twenty".