200000013121 has 8 divisors (see below), whose sum is σ = 201101572584. Its totient is φ = 198899326080.

The previous prime is 200000013119. The next prime is 200000013193. The reversal of 200000013121 is 121310000002.

It can be written as a sum of positive squares in 4 ways, for example, as 100910416896 + 99089596225 = 317664^2 + 314785^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 200000013121 - 2¹ = 200000013119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200000013098 and 200000013107.

It is not an unprimeable number, because it can be changed into a prime (200000011121) 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, 244341 + ... + 678013.

It is an arithmetic number, because the mean of its divisors is an integer number (25137696573).

Almost surely, 2^200000013121 is an apocalyptic number.

It is an amenable number.

200000013121 is a deficient number, since it is larger than the sum of its proper divisors (1101559463).

200000013121 is a wasteful number, since it uses less digits than its factorization.

200000013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436211.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 200000013121 its reverse (121310000002), we get a palindrome (321310013123).

The spelling of 200000013121 in words is "two hundred billion, thirteen thousand, one hundred twenty-one".