1220400035003 has 4 divisors (see below), whose sum is σ = 1220404433040. Its totient is φ = 1220395636968.

The previous prime is 1220400034999. The next prime is 1220400035021. The reversal of 1220400035003 is 3005300040221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220400035003 - 2² = 1220400034999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220400035053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1752575 + ... + 2347832.

It is an arithmetic number, because the mean of its divisors is an integer number (305101108260).

Almost surely, 2^{1220400035003} is an apocalyptic number.

1220400035003 is a deficient number, since it is larger than the sum of its proper divisors (4398037).

1220400035003 is an equidigital number, since it uses as much as digits as its factorization.

1220400035003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398036.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 1220400035003 its reverse (3005300040221), we get a palindrome (4225700075224).

The spelling of 1220400035003 in words is "one trillion, two hundred twenty billion, four hundred million, thirty-five thousand, three".