20132120121 has 8 divisors (see below), whose sum is σ = 26868666240. Its totient is φ = 13408493712.

The previous prime is 20132120093. The next prime is 20132120213. The reversal of 20132120121 is 12102123102.

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

It is not a de Polignac number, because 20132120121 - 2¹⁰ = 20132119097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20132120121.

It is not an unprimeable number, because it can be changed into a prime (20132120221) 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, 3226290 + ... + 3232523.

It is an arithmetic number, because the mean of its divisors is an integer number (3358583280).

Almost surely, 2^20132120121 is an apocalyptic number.

It is an amenable number.

20132120121 is a deficient number, since it is larger than the sum of its proper divisors (6736546119).

20132120121 is a wasteful number, since it uses less digits than its factorization.

20132120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459855.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20132120121 its reverse (12102123102), we get a palindrome (32234243223).

The spelling of 20132120121 in words is "twenty billion, one hundred thirty-two million, one hundred twenty thousand, one hundred twenty-one".