1221223200303 has 8 divisors (see below), whose sum is σ = 1628745318448. Its totient is φ = 813924941184.

The previous prime is 1221223200227. The next prime is 1221223200311. The reversal of 1221223200303 is 3030023221221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1221223200303 - 2²² = 1221219005999 is a prime.

It is a super-2 number, since 2×1221223200303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221223200303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221223200503) 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, 55952026 + ... + 55973847.

It is an arithmetic number, because the mean of its divisors is an integer number (203593164806).

Almost surely, 2^{1221223200303} is an apocalyptic number.

1221223200303 is a deficient number, since it is larger than the sum of its proper divisors (407522118145).

1221223200303 is a wasteful number, since it uses less digits than its factorization.

1221223200303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111929513.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1221223200303 its reverse (3030023221221), we get a palindrome (4251246421524).

The spelling of 1221223200303 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-three million, two hundred thousand, three hundred three".