20121300200233 has 4 divisors (see below), whose sum is σ = 20156662767060. Its totient is φ = 20085937633408.

The previous prime is 20121300200219. The next prime is 20121300200249. The reversal of 20121300200233 is 33200200312102.

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 1647095025664 + 18474205174569 = 1283392^2 + 4298163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121300200233 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 20121300200233.

It is not an unprimeable number, because it can be changed into a prime (20121300200333) 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, 17681282560 + ... + 17681283697.

It is an arithmetic number, because the mean of its divisors is an integer number (5039165691765).

Almost surely, 2^{20121300200233} is an apocalyptic number.

It is an amenable number.

20121300200233 is a deficient number, since it is larger than the sum of its proper divisors (35362566827).

20121300200233 is an equidigital number, since it uses as much as digits as its factorization.

20121300200233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35362566826.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20121300200233 its reverse (33200200312102), we get a palindrome (53321500512335).

The spelling of 20121300200233 in words is "twenty trillion, one hundred twenty-one billion, three hundred million, two hundred thousand, two hundred thirty-three".