212022102121 has 2 divisors, whose sum is σ = 212022102122. Its totient is φ = 212022102120.

The previous prime is 212022102107. The next prime is 212022102143. The reversal of 212022102121 is 121201220212.

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., 141165518400 + 70856583721 = 375720^2 + 266189^2 .

It is a cyclic number.

It is not a de Polignac number, because 212022102121 - 2³³ = 203432167529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212022102095 and 212022102104.

It is not a weakly prime, because it can be changed into another prime (212022102151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011051060 + 106011051061.

It is an arithmetic number, because the mean of its divisors is an integer number (106011051061).

Almost surely, 2^212022102121 is an apocalyptic number.

It is an amenable number.

212022102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212022102121 is an equidigital number, since it uses as much as digits as its factorization.

212022102121 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 212022102121 its reverse (121201220212), we get a palindrome (333223322333).

The spelling of 212022102121 in words is "two hundred twelve billion, twenty-two million, one hundred two thousand, one hundred twenty-one".