2220212101021 has 2 divisors, whose sum is σ = 2220212101022. Its totient is φ = 2220212101020.

The previous prime is 2220212101013. The next prime is 2220212101031. The reversal of 2220212101021 is 1201012120222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2186864228025 + 33347872996 = 1478805^2 + 182614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220212101021 - 2³ = 2220212101013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220212100986 and 2220212101004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220212101001) 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 as a sum of consecutive naturals, namely, 1110106050510 + 1110106050511.

It is an arithmetic number, because the mean of its divisors is an integer number (1110106050511).

Almost surely, 2^{2220212101021} is an apocalyptic number.

It is an amenable number.

2220212101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220212101021 is an equidigital number, since it uses as much as digits as its factorization.

2220212101021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2220212101021 its reverse (1201012120222), we get a palindrome (3421224221243).

The spelling of 2220212101021 in words is "two trillion, two hundred twenty billion, two hundred twelve million, one hundred one thousand, twenty-one".