212002102122001 has 4 divisors (see below), whose sum is σ = 212268102250932. Its totient is φ = 211736101993072.

The previous prime is 212002102121983. The next prime is 212002102122119. The reversal of 212002102122001 is 100221201200212.

It is a happy number.

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 157289096835025 + 54713005286976 = 12541495^2 + 7396824^2 .

It is a cyclic number.

It is not a de Polignac number, because 212002102122001 - 2²¹ = 212002100024849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212002102122901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133000063270 + ... + 133000064863.

It is an arithmetic number, because the mean of its divisors is an integer number (53067025562733).

Almost surely, 2^{212002102122001} is an apocalyptic number.

It is an amenable number.

212002102122001 is a deficient number, since it is larger than the sum of its proper divisors (266000128931).

212002102122001 is an equidigital number, since it uses as much as digits as its factorization.

212002102122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266000128930.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212002102122001 its reverse (100221201200212), we get a palindrome (312223303322213).

The spelling of 212002102122001 in words is "two hundred twelve trillion, two billion, one hundred two million, one hundred twenty-two thousand, one".