2212202021 has 2 divisors, whose sum is σ = 2212202022. Its totient is φ = 2212202020.

The previous prime is 2212201987. The next prime is 2212202029. The reversal of 2212202021 is 1202022122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2199141025 + 13060996 = 46895^2 + 3614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212202021 - 2²⁶ = 2145093157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212201987 and 2212202005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212202029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106101010 + 1106101011.

It is an arithmetic number, because the mean of its divisors is an integer number (1106101011).

Almost surely, 2^2212202021 is an apocalyptic number.

It is an amenable number.

2212202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212202021 is an equidigital number, since it uses as much as digits as its factorization.

2212202021 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 14.

The square root of 2212202021 is about 47034.0517178778. The cubic root of 2212202021 is about 1302.9915368808.

Adding to 2212202021 its reverse (1202022122), we get a palindrome (3414224143).

The spelling of 2212202021 in words is "two billion, two hundred twelve million, two hundred two thousand, twenty-one".