20122123133 has 4 divisors (see below), whose sum is σ = 22996712160. Its totient is φ = 17247534108.

The previous prime is 20122123127. The next prime is 20122123139. The reversal of 20122123133 is 33132122102.

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 an interprime number because it is at equal distance from previous prime (20122123127) and next prime (20122123139).

It is not a de Polignac number, because 20122123133 - 2⁶ = 20122123069 is a prime.

It is a super-3 number, since 3×20122123133³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122123139) 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, 1437294503 + ... + 1437294516.

It is an arithmetic number, because the mean of its divisors is an integer number (5749178040).

Almost surely, 2^20122123133 is an apocalyptic number.

It is an amenable number.

20122123133 is a deficient number, since it is larger than the sum of its proper divisors (2874589027).

20122123133 is an equidigital number, since it uses as much as digits as its factorization.

20122123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874589026.

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

Adding to 20122123133 its reverse (33132122102), we get a palindrome (53254245235).

The spelling of 20122123133 in words is "twenty billion, one hundred twenty-two million, one hundred twenty-three thousand, one hundred thirty-three".