122021 has 2 divisors, whose sum is σ = 122022. Its totient is φ = 122020.

The previous prime is 122011. The next prime is 122027. The reversal of 122021 is 120221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96100 + 25921 = 310^2 + 161^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021 - 2¹⁰ = 120997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010 + 61011.

It is an arithmetic number, because the mean of its divisors is an integer number (61011).

2¹²²⁰²¹ is an apocalyptic number.

It is an amenable number.

122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021 is an equidigital number, since it uses as much as digits as its factorization.

122021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 122021 is about 349.3150440505. The cubic root of 122021 is about 49.5996021907.

Adding to 122021 its reverse (120221), we get a palindrome (242242).

It can be divided in two parts, 1 and 22021, that added together give a palindrome (22022).

The spelling of 122021 in words is "one hundred twenty-two thousand, twenty-one", and thus it is an iban number.