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122021 is a prime number
BaseRepresentation
bin11101110010100101
320012101022
4131302211
512401041
62340525
71015514
oct356245
9205338
10122021
1183749
125a745
1343703
143267b
152624b
hex1dca5

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.