1233100051021 has 4 divisors (see below), whose sum is σ = 1233184890492. Its totient is φ = 1233015211552.

The previous prime is 1233100051013. The next prime is 1233100051061. The reversal of 1233100051021 is 1201500013321.

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 114982028100 + 1118118022921 = 339090^2 + 1057411^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233100051021 - 2³ = 1233100051013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233100051021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233100051061) 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, 42397930 + ... + 42427003.

It is an arithmetic number, because the mean of its divisors is an integer number (308296222623).

Almost surely, 2^{1233100051021} is an apocalyptic number.

It is an amenable number.

1233100051021 is a deficient number, since it is larger than the sum of its proper divisors (84839471).

1233100051021 is an equidigital number, since it uses as much as digits as its factorization.

1233100051021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84839470.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 1233100051021 its reverse (1201500013321), we get a palindrome (2434600064342).

The spelling of 1233100051021 in words is "one trillion, two hundred thirty-three billion, one hundred million, fifty-one thousand, twenty-one".