1221401133003 has 8 divisors (see below), whose sum is σ = 1663184521728. Its totient is φ = 796942583144.

The previous prime is 1221401132977. The next prime is 1221401133011. The reversal of 1221401133003 is 3003311041221.

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

It is a cyclic number.

It is not a de Polignac number, because 1221401133003 - 2⁸ = 1221401132747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221401133103) 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, 4331209551 + ... + 4331209832.

It is an arithmetic number, because the mean of its divisors is an integer number (207898065216).

Almost surely, 2^{1221401133003} is an apocalyptic number.

1221401133003 is a deficient number, since it is larger than the sum of its proper divisors (441783388725).

1221401133003 is an equidigital number, since it uses as much as digits as its factorization.

1221401133003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662419433.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1221401133003 its reverse (3003311041221), we get a palindrome (4224712174224).

The spelling of 1221401133003 in words is "one trillion, two hundred twenty-one billion, four hundred one million, one hundred thirty-three thousand, three".