200121102013 has 4 divisors (see below), whose sum is σ = 228709830880. Its totient is φ = 171532373148.

The previous prime is 200121101987. The next prime is 200121102079. The reversal of 200121102013 is 310201121002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200121102013 - 2³⁷ = 62682148541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121101984 and 200121102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121106013) 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, 14294364423 + ... + 14294364436.

It is an arithmetic number, because the mean of its divisors is an integer number (57177457720).

Almost surely, 2^200121102013 is an apocalyptic number.

It is an amenable number.

200121102013 is a deficient number, since it is larger than the sum of its proper divisors (28588728867).

200121102013 is an equidigital number, since it uses as much as digits as its factorization.

200121102013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28588728866.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 200121102013 its reverse (310201121002), we get a palindrome (510322223015).

The spelling of 200121102013 in words is "two hundred billion, one hundred twenty-one million, one hundred two thousand, thirteen".