1221333203203 has 2 divisors, whose sum is σ = 1221333203204. Its totient is φ = 1221333203202.

The previous prime is 1221333203113. The next prime is 1221333203219. The reversal of 1221333203203 is 3023023331221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221333203203 - 2²⁹ = 1220796332291 is a prime.

It is a super-2 number, since 2×1221333203203² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1221333203243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610666601601 + 610666601602.

It is an arithmetic number, because the mean of its divisors is an integer number (610666601602).

Almost surely, 2^{1221333203203} is an apocalyptic number.

1221333203203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221333203203 is an equidigital number, since it uses as much as digits as its factorization.

1221333203203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 1221333203203 its reverse (3023023331221), we get a palindrome (4244356534424).

The spelling of 1221333203203 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-three million, two hundred three thousand, two hundred three".