220001001212101 has 2 divisors, whose sum is σ = 220001001212102. Its totient is φ = 220001001212100.

The previous prime is 220001001212051. The next prime is 220001001212107. The reversal of 220001001212101 is 101212100100022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185198729783076 + 34802271429025 = 13608774^2 + 5899345^2 .

It is a cyclic number.

It is not a de Polignac number, because 220001001212101 - 2²⁷ = 220000866994373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220001001212107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000500606050 + 110000500606051.

It is an arithmetic number, because the mean of its divisors is an integer number (110000500606051).

Almost surely, 2^{220001001212101} is an apocalyptic number.

It is an amenable number.

220001001212101 is a deficient number, since it is larger than the sum of its proper divisors (1).

220001001212101 is an equidigital number, since it uses as much as digits as its factorization.

220001001212101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220001001212101 its reverse (101212100100022), we get a palindrome (321213101312123).

The spelling of 220001001212101 in words is "two hundred twenty trillion, one billion, one million, two hundred twelve thousand, one hundred one".