2212020110021 has 2 divisors, whose sum is σ = 2212020110022. Its totient is φ = 2212020110020.

The previous prime is 2212020109979. The next prime is 2212020110033. The reversal of 2212020110021 is 1200110202122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2103457108900 + 108563001121 = 1450330^2 + 329489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2212020110021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212020109978 and 2212020110005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212020110071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106010055010 + 1106010055011.

It is an arithmetic number, because the mean of its divisors is an integer number (1106010055011).

Almost surely, 2^{2212020110021} is an apocalyptic number.

It is an amenable number.

2212020110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212020110021 is an equidigital number, since it uses as much as digits as its factorization.

2212020110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2212020110021 its reverse (1200110202122), we get a palindrome (3412130312143).

The spelling of 2212020110021 in words is "two trillion, two hundred twelve billion, twenty million, one hundred ten thousand, twenty-one".