1220001413440 has 56 divisors (see below), whose sum is σ = 2948488542432. Its totient is φ = 480716966400.

The previous prime is 1220001413437. The next prime is 1220001413441. The reversal of 1220001413440 is 443141000221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220001413441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28430086 + ... + 28472965.

Almost surely, 2^{1220001413440} is an apocalyptic number.

1220001413440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220001413440 is an abundant number, since it is smaller than the sum of its proper divisors (1728487128992).

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

1220001413440 is an equidigital number, since it uses as much as digits as its factorization.

1220001413440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56903135 (or 56903125 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1220001413440 its reverse (443141000221), we get a palindrome (1663142413661).

The spelling of 1220001413440 in words is "one trillion, two hundred twenty billion, one million, four hundred thirteen thousand, four hundred forty".