20332124121 has 4 divisors (see below), whose sum is σ = 27109498832. Its totient is φ = 13554749412.

The previous prime is 20332124081. The next prime is 20332124159. The reversal of 20332124121 is 12142123302.

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 not a de Polignac number, because 20332124121 - 2¹¹ = 20332122073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20332124161) 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, 3388687351 + ... + 3388687356.

It is an arithmetic number, because the mean of its divisors is an integer number (6777374708).

Almost surely, 2^20332124121 is an apocalyptic number.

It is an amenable number.

20332124121 is a deficient number, since it is larger than the sum of its proper divisors (6777374711).

20332124121 is an equidigital number, since it uses as much as digits as its factorization.

20332124121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777374710.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20332124121 its reverse (12142123302), we get a palindrome (32474247423).

It can be divided in two parts, 20332 and 124121, that added together give a triangular number (144453 = T₅₃₇).

The spelling of 20332124121 in words is "twenty billion, three hundred thirty-two million, one hundred twenty-four thousand, one hundred twenty-one".