212122020102001 has 4 divisors (see below), whose sum is σ = 224599785990372. Its totient is φ = 199644254213632.

The previous prime is 212122020101989. The next prime is 212122020102011. The reversal of 212122020102001 is 100201020221212.

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 153720694512225 + 58401325589776 = 12398415^2 + 7642076^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122020102001 - 2²⁹ = 212121483231089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122020102011) 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, 6238882944160 + ... + 6238882944193.

It is an arithmetic number, because the mean of its divisors is an integer number (56149946497593).

Almost surely, 2^{212122020102001} is an apocalyptic number.

It is an amenable number.

212122020102001 is a deficient number, since it is larger than the sum of its proper divisors (12477765888371).

212122020102001 is a wasteful number, since it uses less digits than its factorization.

212122020102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12477765888370.

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

Adding to 212122020102001 its reverse (100201020221212), we get a palindrome (312323040323213).

The spelling of 212122020102001 in words is "two hundred twelve trillion, one hundred twenty-two billion, twenty million, one hundred two thousand, one".