1233001322221 has 4 divisors (see below), whose sum is σ = 1263074525244. Its totient is φ = 1202928119200.

The previous prime is 1233001322173. The next prime is 1233001322239. The reversal of 1233001322221 is 1222231003321.

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 240614775625 + 992386546596 = 490525^2 + 996186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233001322221 - 2¹⁵ = 1233001289453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1233001322192 and 1233001322201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233001322281) 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, 15036601450 + ... + 15036601531.

It is an arithmetic number, because the mean of its divisors is an integer number (315768631311).

Almost surely, 2^{1233001322221} is an apocalyptic number.

It is an amenable number.

1233001322221 is a deficient number, since it is larger than the sum of its proper divisors (30073203023).

1233001322221 is an equidigital number, since it uses as much as digits as its factorization.

1233001322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30073203022.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1233001322221 its reverse (1222231003321), we get a palindrome (2455232325542).

The spelling of 1233001322221 in words is "one trillion, two hundred thirty-three billion, one million, three hundred twenty-two thousand, two hundred twenty-one".