20012230551 has 8 divisors (see below), whose sum is σ = 26713402864. Its totient is φ = 13326272640.

The previous prime is 20012230549. The next prime is 20012230571. The reversal of 20012230551 is 15503221002.

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

It is not a de Polignac number, because 20012230551 - 2¹ = 20012230549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012230571) 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, 3800530 + ... + 3805791.

It is an arithmetic number, because the mean of its divisors is an integer number (3339175358).

Almost surely, 2^20012230551 is an apocalyptic number.

20012230551 is a deficient number, since it is larger than the sum of its proper divisors (6701172313).

20012230551 is an equidigital number, since it uses as much as digits as its factorization.

20012230551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607201.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 20012230551 its reverse (15503221002), we get a palindrome (35515451553).

The spelling of 20012230551 in words is "twenty billion, twelve million, two hundred thirty thousand, five hundred fifty-one".