20003132121 has 8 divisors (see below), whose sum is σ = 30480963264. Its totient is φ = 11430361200.

The previous prime is 20003132101. The next prime is 20003132153. The reversal of 20003132121 is 12123130002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20003132121 - 2⁹ = 20003131609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20003132121.

It is not an unprimeable number, because it can be changed into a prime (20003132101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476265030 + ... + 476265071.

It is an arithmetic number, because the mean of its divisors is an integer number (3810120408).

Almost surely, 2^20003132121 is an apocalyptic number.

20003132121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20003132121 is a deficient number, since it is larger than the sum of its proper divisors (10477831143).

20003132121 is an equidigital number, since it uses as much as digits as its factorization.

20003132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952530111.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20003132121 its reverse (12123130002), we get a palindrome (32126262123).

The spelling of 20003132121 in words is "twenty billion, three million, one hundred thirty-two thousand, one hundred twenty-one".