1220030535400 has 48 divisors (see below), whose sum is σ = 2837106360000. Its totient is φ = 487920108480.

The previous prime is 1220030535389. The next prime is 1220030535457. The reversal of 1220030535400 is 45350300221.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491601 + ... + 1637599.

It is an arithmetic number, because the mean of its divisors is an integer number (59106382500).

Almost surely, 2^{1220030535400} is an apocalyptic number.

1220030535400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220030535400 is an abundant number, since it is smaller than the sum of its proper divisors (1617075824600).

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

1220030535400 is a wasteful number, since it uses less digits than its factorization.

1220030535400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151338 (or 1151329 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 1220030535400 its reverse (45350300221), we get a palindrome (1265380835621).

The spelling of 1220030535400 in words is "one trillion, two hundred twenty billion, thirty million, five hundred thirty-five thousand, four hundred".