1220115340420 has 96 divisors (see below), whose sum is σ = 2656862208000. Its totient is φ = 470373481344.

The previous prime is 1220115340391. The next prime is 1220115340487. The reversal of 1220115340420 is 240435110221.

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, 28420131 + ... + 28463029.

It is an arithmetic number, because the mean of its divisors is an integer number (27675648000).

Almost surely, 2^{1220115340420} is an apocalyptic number.

1220115340420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220115340420 is an abundant number, since it is smaller than the sum of its proper divisors (1436746867580).

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

1220115340420 is a wasteful number, since it uses less digits than its factorization.

1220115340420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43417 (or 43415 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 1220115340420 in words is "one trillion, two hundred twenty billion, one hundred fifteen million, three hundred forty thousand, four hundred twenty".