1221330030003 has 6 divisors (see below), whose sum is σ = 1764143376684. Its totient is φ = 814220019996.

The previous prime is 1221330030001. The next prime is 1221330030113. The reversal of 1221330030003 is 3000300331221.

1221330030003 is a `hidden beast` number, since 12 + 21 + 330 + 0 + 300 + 0 + 3 = 666.

It is not a de Polignac number, because 1221330030003 - 2¹ = 1221330030001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221330030001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67851668325 + ... + 67851668342.

It is an arithmetic number, because the mean of its divisors is an integer number (294023896114).

Almost surely, 2^{1221330030003} is an apocalyptic number.

1221330030003 is a deficient number, since it is larger than the sum of its proper divisors (542813346681).

1221330030003 is a wasteful number, since it uses less digits than its factorization.

1221330030003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135703336673 (or 135703336670 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 1221330030003 its reverse (3000300331221), we get a palindrome (4221630361224).

The spelling of 1221330030003 in words is "one trillion, two hundred twenty-one billion, three hundred thirty million, thirty thousand, three".