212022233021 has 2 divisors, whose sum is σ = 212022233022. Its totient is φ = 212022233020.

The previous prime is 212022232993. The next prime is 212022233029. The reversal of 212022233021 is 120332220212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202144656025 + 9877576996 = 449605^2 + 99386^2 .

It is a cyclic number.

It is not a de Polignac number, because 212022233021 - 2⁶ = 212022232957 is a prime.

It is a super-2 number, since 2×212022233021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212022232984 and 212022233002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212022233029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011116510 + 106011116511.

It is an arithmetic number, because the mean of its divisors is an integer number (106011116511).

Almost surely, 2^212022233021 is an apocalyptic number.

It is an amenable number.

212022233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

212022233021 is an equidigital number, since it uses as much as digits as its factorization.

212022233021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212022233021 its reverse (120332220212), we get a palindrome (332354453233).

The spelling of 212022233021 in words is "two hundred twelve billion, twenty-two million, two hundred thirty-three thousand, twenty-one".