1221130003203 has 48 divisors (see below), whose sum is σ = 2042945888256. Its totient is φ = 694646449920.

The previous prime is 1221130003201. The next prime is 1221130003213. The reversal of 1221130003203 is 3023000311221.

It is not a de Polignac number, because 1221130003203 - 2¹ = 1221130003201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221130003201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 370851 + ... + 1606172.

It is an arithmetic number, because the mean of its divisors is an integer number (42561372672).

Almost surely, 2^{1221130003203} is an apocalyptic number.

1221130003203 is a deficient number, since it is larger than the sum of its proper divisors (821815885053).

1221130003203 is a wasteful number, since it uses less digits than its factorization.

1221130003203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977424 (or 1977421 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1221130003203 its reverse (3023000311221), we get a palindrome (4244130314424).

The spelling of 1221130003203 in words is "one trillion, two hundred twenty-one billion, one hundred thirty million, three thousand, two hundred three".