1233101322221 has 4 divisors (see below), whose sum is σ = 1275622057500. Its totient is φ = 1190580586944.

The previous prime is 1233101322197. The next prime is 1233101322227. The reversal of 1233101322221 is 1222231013321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 898798802500 + 334302519721 = 948050^2 + 578189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233101322221 - 2¹⁰ = 1233101321197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233101322227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21260367596 + ... + 21260367653.

It is an arithmetic number, because the mean of its divisors is an integer number (318905514375).

Almost surely, 2^{1233101322221} is an apocalyptic number.

It is an amenable number.

1233101322221 is a deficient number, since it is larger than the sum of its proper divisors (42520735279).

1233101322221 is an equidigital number, since it uses as much as digits as its factorization.

1233101322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42520735278.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1233101322221 its reverse (1222231013321), we get a palindrome (2455332335542).

The spelling of 1233101322221 in words is "one trillion, two hundred thirty-three billion, one hundred one million, three hundred twenty-two thousand, two hundred twenty-one".