1220311300400 has 60 divisors (see below), whose sum is σ = 2947147810944. Its totient is φ = 485568864000.

The previous prime is 1220311300399. The next prime is 1220311300423. The reversal of 1220311300400 is 40031130221.

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, 7909931 + ... + 8062730.

Almost surely, 2^{1220311300400} is an apocalyptic number.

1220311300400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220311300400 is an abundant number, since it is smaller than the sum of its proper divisors (1726836510544).

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

1220311300400 is a wasteful number, since it uses less digits than its factorization.

1220311300400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15972870 (or 15972859 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1220311300400 its reverse (40031130221), we get a palindrome (1260342430621).

The spelling of 1220311300400 in words is "one trillion, two hundred twenty billion, three hundred eleven million, three hundred thousand, four hundred".