1221130203333 has 16 divisors (see below), whose sum is σ = 1673329362816. Its totient is φ = 791539214400.

The previous prime is 1221130203299. The next prime is 1221130203341. The reversal of 1221130203333 is 3333020311221.

It is not a de Polignac number, because 1221130203333 - 2¹⁰ = 1221130202309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221130203343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3624393 + ... + 3946958.

It is an arithmetic number, because the mean of its divisors is an integer number (104583085176).

Almost surely, 2^{1221130203333} is an apocalyptic number.

It is an amenable number.

1221130203333 is a deficient number, since it is larger than the sum of its proper divisors (452199159483).

1221130203333 is a wasteful number, since it uses less digits than its factorization.

1221130203333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572844.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1221130203333 its reverse (3333020311221), we get a palindrome (4554150514554).

The spelling of 1221130203333 in words is "one trillion, two hundred twenty-one billion, one hundred thirty million, two hundred three thousand, three hundred thirty-three".