1233221321001 has 32 divisors (see below), whose sum is σ = 1694322413568. Its totient is φ = 797284762560.

The previous prime is 1233221320979. The next prime is 1233221321009. The reversal of 1233221321001 is 1001231223321.

It is not a de Polignac number, because 1233221321001 - 2⁶ = 1233221320937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1233221321009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48717790 + ... + 48743096.

It is an arithmetic number, because the mean of its divisors is an integer number (52947575424).

Almost surely, 2^{1233221321001} is an apocalyptic number.

It is an amenable number.

1233221321001 is a deficient number, since it is larger than the sum of its proper divisors (461101092567).

1233221321001 is a wasteful number, since it uses less digits than its factorization.

1233221321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26781.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1233221321001 its reverse (1001231223321), we get a palindrome (2234452544322).

The spelling of 1233221321001 in words is "one trillion, two hundred thirty-three billion, two hundred twenty-one million, three hundred twenty-one thousand, one".