212122110010001 has 4 divisors (see below), whose sum is σ = 212729909752500. Its totient is φ = 211514310267504.

The previous prime is 212122110009983. The next prime is 212122110010079. The reversal of 212122110010001 is 100010011221212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 176596218680401 + 35525891329600 = 13288951^2 + 5960360^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122110010001 - 2²⁶ = 212122042901137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122110010201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303899870726 + ... + 303899871423.

It is an arithmetic number, because the mean of its divisors is an integer number (53182477438125).

Almost surely, 2^{212122110010001} is an apocalyptic number.

It is an amenable number.

212122110010001 is a deficient number, since it is larger than the sum of its proper divisors (607799742499).

212122110010001 is an equidigital number, since it uses as much as digits as its factorization.

212122110010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607799742498.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212122110010001 its reverse (100010011221212), we get a palindrome (312132121231213).

The spelling of 212122110010001 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred ten million, ten thousand, one".