20011102011233 has 4 divisors (see below), whose sum is σ = 20011883079828. Its totient is φ = 20010320942640.

The previous prime is 20011102011191. The next prime is 20011102011287. The reversal of 20011102011233 is 33211020111002.

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 9485340509584 + 10525761501649 = 3079828^2 + 3244343^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011102011233 - 2¹² = 20011102007137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011102011133) 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, 390495866 + ... + 390547107.

It is an arithmetic number, because the mean of its divisors is an integer number (5002970769957).

Almost surely, 2^{20011102011233} is an apocalyptic number.

It is an amenable number.

20011102011233 is a deficient number, since it is larger than the sum of its proper divisors (781068595).

20011102011233 is an equidigital number, since it uses as much as digits as its factorization.

20011102011233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781068594.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20011102011233 its reverse (33211020111002), we get a palindrome (53222122122235).

The spelling of 20011102011233 in words is "twenty trillion, eleven billion, one hundred two million, eleven thousand, two hundred thirty-three".