212222100313001 has 4 divisors (see below), whose sum is σ = 219540103772100. Its totient is φ = 204904096853904.

The previous prime is 212222100312931. The next prime is 212222100313033. The reversal of 212222100313001 is 100313001222212.

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 122944187520400 + 89277912792601 = 11088020^2 + 9448699^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222100313001 - 2¹⁴ = 212222100296617 is a prime.

It is a super-2 number, since 2×212222100313001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212222100318001) 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 3 ways as a sum of consecutive naturals, for example, 3659001729506 + ... + 3659001729563.

It is an arithmetic number, because the mean of its divisors is an integer number (54885025943025).

Almost surely, 2^{212222100313001} is an apocalyptic number.

It is an amenable number.

212222100313001 is a deficient number, since it is larger than the sum of its proper divisors (7318003459099).

212222100313001 is an equidigital number, since it uses as much as digits as its factorization.

212222100313001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7318003459098.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212222100313001 its reverse (100313001222212), we get a palindrome (312535101535213).

The spelling of 212222100313001 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred million, three hundred thirteen thousand, one".