20121400003 has 4 divisors (see below), whose sum is σ = 20136867408. Its totient is φ = 20105932600.

The previous prime is 20121399983. The next prime is 20121400009. The reversal of 20121400003 is 30000412102.

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 20121400003 - 2¹⁷ = 20121268931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121400009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7731751 + ... + 7734352.

It is an arithmetic number, because the mean of its divisors is an integer number (5034216852).

Almost surely, 2^20121400003 is an apocalyptic number.

20121400003 is a deficient number, since it is larger than the sum of its proper divisors (15467405).

20121400003 is a wasteful number, since it uses less digits than its factorization.

20121400003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15467404.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20121400003 its reverse (30000412102), we get a palindrome (50121812105).

The spelling of 20121400003 in words is "twenty billion, one hundred twenty-one million, four hundred thousand, three".