20013414121 has 4 divisors (see below), whose sum is σ = 20087813700. Its totient is φ = 19939014544.

The previous prime is 20013414079. The next prime is 20013414133. The reversal of 20013414121 is 12141431002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1111288896 + 18902125225 = 33336^2 + 137485^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013414121 - 2¹⁷ = 20013283049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013412121) 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, 37199386 + ... + 37199923.

It is an arithmetic number, because the mean of its divisors is an integer number (5021953425).

Almost surely, 2^20013414121 is an apocalyptic number.

It is an amenable number.

20013414121 is a deficient number, since it is larger than the sum of its proper divisors (74399579).

20013414121 is an equidigital number, since it uses as much as digits as its factorization.

20013414121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74399578.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20013414121 its reverse (12141431002), we get a palindrome (32154845123).

The spelling of 20013414121 in words is "twenty billion, thirteen million, four hundred fourteen thousand, one hundred twenty-one".