20210010200121 has 16 divisors (see below), whose sum is σ = 30797605724544. Its totient is φ = 11548052367744.

The previous prime is 20210010200119. The next prime is 20210010200147. The reversal of 20210010200121 is 12100201001202.

It is not a de Polignac number, because 20210010200121 - 2¹ = 20210010200119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20210010200097 and 20210010200106.

It is not an unprimeable number, because it can be changed into a prime (20210010200161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21397116 + ... + 22321661.

It is an arithmetic number, because the mean of its divisors is an integer number (1924850357784).

Almost surely, 2^{20210010200121} is an apocalyptic number.

20210010200121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20210010200121 is a deficient number, since it is larger than the sum of its proper divisors (10587595524423).

20210010200121 is a wasteful number, since it uses less digits than its factorization.

20210010200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43740800.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20210010200121 its reverse (12100201001202), we get a palindrome (32310211201323).

The spelling of 20210010200121 in words is "twenty trillion, two hundred ten billion, ten million, two hundred thousand, one hundred twenty-one".