1321221234033 has 16 divisors (see below), whose sum is σ = 1959571551360. Its totient is φ = 879821113968.

The previous prime is 1321221234029. The next prime is 1321221234059. The reversal of 1321221234033 is 3304321221231.

1321221234033 is a `hidden beast` number, since 1 + 3 + 212 + 21 + 23 + 403 + 3 = 666.

It is not a de Polignac number, because 1321221234033 - 2² = 1321221234029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1321221233988 and 1321221234006.

It is not an unprimeable number, because it can be changed into a prime (1321221234083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27560110 + ... + 27608007.

It is an arithmetic number, because the mean of its divisors is an integer number (122473221960).

Almost surely, 2^{1321221234033} is an apocalyptic number.

It is an amenable number.

1321221234033 is a deficient number, since it is larger than the sum of its proper divisors (638350317327).

1321221234033 is an equidigital number, since it uses as much as digits as its factorization.

1321221234033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55169013 (or 55169007 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 1321221234033 its reverse (3304321221231), we get a palindrome (4625542455264).

The spelling of 1321221234033 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-one million, two hundred thirty-four thousand, thirty-three".