20123012100233 has 4 divisors (see below), whose sum is σ = 22997728114560. Its totient is φ = 17248296085908.

The previous prime is 20123012100211. The next prime is 20123012100253. The reversal of 20123012100233 is 33200121032102.

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 a cyclic number.

It is not a de Polignac number, because 20123012100233 - 2¹⁸ = 20123011838089 is a prime.

It is a super-2 number, since 2×20123012100233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20123012100253) 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, 1437358007153 + ... + 1437358007166.

It is an arithmetic number, because the mean of its divisors is an integer number (5749432028640).

Almost surely, 2^{20123012100233} is an apocalyptic number.

It is an amenable number.

20123012100233 is a deficient number, since it is larger than the sum of its proper divisors (2874716014327).

20123012100233 is an equidigital number, since it uses as much as digits as its factorization.

20123012100233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874716014326.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20123012100233 its reverse (33200121032102), we get a palindrome (53323133132335).

The spelling of 20123012100233 in words is "twenty trillion, one hundred twenty-three billion, twelve million, one hundred thousand, two hundred thirty-three".