120623021 has 2 divisors, whose sum is σ = 120623022. Its totient is φ = 120623020.

The previous prime is 120622993. The next prime is 120623023. The reversal of 120623021 is 120326021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75933796 + 44689225 = 8714^2 + 6685^2 .

It is a cyclic number.

It is not a de Polignac number, because 120623021 - 2¹⁴ = 120606637 is a prime.

Together with 120623023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120623023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60311510 + 60311511.

It is an arithmetic number, because the mean of its divisors is an integer number (60311511).

Almost surely, 2^120623021 is an apocalyptic number.

It is an amenable number.

120623021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120623021 is an equidigital number, since it uses as much as digits as its factorization.

120623021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 120623021 is about 10982.8512236122. The cubic root of 120623021 is about 494.0945540131.

Adding to 120623021 its reverse (120326021), we get a palindrome (240949042).

The spelling of 120623021 in words is "one hundred twenty million, six hundred twenty-three thousand, twenty-one".