20200121010011 has 8 divisors (see below), whose sum is σ = 20583295113024. Its totient is φ = 19819349253000.

The previous prime is 20200121009993. The next prime is 20200121010029. The reversal of 20200121010011 is 11001012100202.

It is an interprime number because it is at equal distance from previous prime (20200121009993) and next prime (20200121010029).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200121010011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200121009974 and 20200121010001.

It is not an unprimeable number, because it can be changed into a prime (20200121010031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600569525 + ... + 600603158.

It is an arithmetic number, because the mean of its divisors is an integer number (2572911889128).

Almost surely, 2^{20200121010011} is an apocalyptic number.

20200121010011 is a deficient number, since it is larger than the sum of its proper divisors (383174103013).

20200121010011 is a wasteful number, since it uses less digits than its factorization.

20200121010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201173001.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20200121010011 its reverse (11001012100202), we get a palindrome (31201133110213).

The spelling of 20200121010011 in words is "twenty trillion, two hundred billion, one hundred twenty-one million, ten thousand, eleven".