20121230001 has 16 divisors (see below), whose sum is σ = 28023502464. Its totient is φ = 12817753344.

The previous prime is 20121229981. The next prime is 20121230083. The reversal of 20121230001 is 10003212102.

It is not a de Polignac number, because 20121230001 - 2¹⁷ = 20121098929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121250001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81826 + ... + 216651.

It is an arithmetic number, because the mean of its divisors is an integer number (1751468904).

Almost surely, 2^20121230001 is an apocalyptic number.

It is an amenable number.

20121230001 is a deficient number, since it is larger than the sum of its proper divisors (7902272463).

20121230001 is a wasteful number, since it uses less digits than its factorization.

20121230001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299480.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20121230001 its reverse (10003212102), we get a palindrome (30124442103).

The spelling of 20121230001 in words is "twenty billion, one hundred twenty-one million, two hundred thirty thousand, one".