212021020100001 has 32 divisors (see below), whose sum is σ = 326801877073920. Its totient is φ = 119759801014656.

The previous prime is 212021020099981. The next prime is 212021020100047. The reversal of 212021020100001 is 100001020120212.

It is not a de Polignac number, because 212021020100001 - 2⁵ = 212021020099969 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212021020100001.

It is not an unprimeable number, because it can be changed into a prime (212021020100051) 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 31 ways as a sum of consecutive naturals, for example, 9361761 + ... + 22620446.

It is an arithmetic number, because the mean of its divisors is an integer number (10212558658560).

Almost surely, 2^{212021020100001} is an apocalyptic number.

212021020100001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212021020100001 is a deficient number, since it is larger than the sum of its proper divisors (114780856973919).

212021020100001 is a wasteful number, since it uses less digits than its factorization.

212021020100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31985853.

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

Adding to 212021020100001 its reverse (100001020120212), we get a palindrome (312022040220213).

The spelling of 212021020100001 in words is "two hundred twelve trillion, twenty-one billion, twenty million, one hundred thousand, one".