1233201023121 has 4 divisors (see below), whose sum is σ = 1644268030832. Its totient is φ = 822134015412.

The previous prime is 1233201023099. The next prime is 1233201023261. The reversal of 1233201023121 is 1213201023321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1233201023121 - 2¹⁵ = 1233200990353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233201023521) 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, 205533503851 + ... + 205533503856.

It is an arithmetic number, because the mean of its divisors is an integer number (411067007708).

Almost surely, 2^{1233201023121} is an apocalyptic number.

It is an amenable number.

1233201023121 is a deficient number, since it is larger than the sum of its proper divisors (411067007711).

1233201023121 is an equidigital number, since it uses as much as digits as its factorization.

1233201023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411067007710.

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

Adding to 1233201023121 its reverse (1213201023321), we get a palindrome (2446402046442).

The spelling of 1233201023121 in words is "one trillion, two hundred thirty-three billion, two hundred one million, twenty-three thousand, one hundred twenty-one".