212020011222001 has 4 divisors (see below), whose sum is σ = 214119219254004. Its totient is φ = 209920803190000.

The previous prime is 212020011221987. The next prime is 212020011222029. The reversal of 212020011222001 is 100222110020212.

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 183148990895025 + 28871020326976 = 13533255^2 + 5373176^2 .

It is a cyclic number.

It is not a de Polignac number, because 212020011222001 - 2⁷ = 212020011221873 is a prime.

It is a super-3 number, since 3×212020011222001³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212020011222301) 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, 1049604015850 + ... + 1049604016051.

It is an arithmetic number, because the mean of its divisors is an integer number (53529804813501).

Almost surely, 2^{212020011222001} is an apocalyptic number.

It is an amenable number.

212020011222001 is a deficient number, since it is larger than the sum of its proper divisors (2099208032003).

212020011222001 is a wasteful number, since it uses less digits than its factorization.

212020011222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099208032002.

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

Adding to 212020011222001 its reverse (100222110020212), we get a palindrome (312242121242213).

The spelling of 212020011222001 in words is "two hundred twelve trillion, twenty billion, eleven million, two hundred twenty-two thousand, one".