20200121202005 has 8 divisors (see below), whose sum is σ = 24244053289632. Its totient is φ = 16157491730128.

The previous prime is 20200121201971. The next prime is 20200121202017. The reversal of 20200121202005 is 50020212100202.

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 20200121202005 - 2⁶ = 20200121201941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 325619819 + ... + 325681848.

It is an arithmetic number, because the mean of its divisors is an integer number (3030506661204).

Almost surely, 2^{20200121202005} is an apocalyptic number.

It is an amenable number.

20200121202005 is a deficient number, since it is larger than the sum of its proper divisors (4043932087627).

20200121202005 is an equidigital number, since it uses as much as digits as its factorization.

20200121202005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651307875.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 20200121202005 its reverse (50020212100202), we get a palindrome (70220333302207).

The spelling of 20200121202005 in words is "twenty trillion, two hundred billion, one hundred twenty-one million, two hundred two thousand, five".