1220544231330 has 64 divisors (see below), whose sum is σ = 3264861375360. Its totient is φ = 290209895424.

The previous prime is 1220544231323. The next prime is 1220544231359. The reversal of 1220544231330 is 331324450221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62969889 + ... + 62989268.

It is an arithmetic number, because the mean of its divisors is an integer number (51013458990).

Almost surely, 2^{1220544231330} is an apocalyptic number.

1220544231330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220544231330 is an abundant number, since it is smaller than the sum of its proper divisors (2044317144030).

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

1220544231330 is a wasteful number, since it uses less digits than its factorization.

1220544231330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125959203.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 1220544231330 its reverse (331324450221), we get a palindrome (1551868681551).

The spelling of 1220544231330 in words is "one trillion, two hundred twenty billion, five hundred forty-four million, two hundred thirty-one thousand, three hundred thirty".