20120334251 has 4 divisors (see below), whose sum is σ = 20120946552. Its totient is φ = 20119721952.

The previous prime is 20120334217. The next prime is 20120334281. The reversal of 20120334251 is 15243302102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20120334251 - 2²² = 20116139947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120334281) 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, 253886 + ... + 323571.

It is an arithmetic number, because the mean of its divisors is an integer number (5030236638).

Almost surely, 2^20120334251 is an apocalyptic number.

20120334251 is a deficient number, since it is larger than the sum of its proper divisors (612301).

20120334251 is an equidigital number, since it uses as much as digits as its factorization.

20120334251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612300.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20120334251 its reverse (15243302102), we get a palindrome (35363636353).

The spelling of 20120334251 in words is "twenty billion, one hundred twenty million, three hundred thirty-four thousand, two hundred fifty-one".