120979321 has 2 divisors, whose sum is σ = 120979322. Its totient is φ = 120979320.

The previous prime is 120979319. The next prime is 120979373. The reversal of 120979321 is 123979021.

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., 109830400 + 11148921 = 10480^2 + 3339^2 .

It is a cyclic number.

It is not a de Polignac number, because 120979321 - 2¹ = 120979319 is a prime.

It is a super-2 number, since 2×120979321² = 29271992219242082, which contains 22 as substring.

Together with 120979319, it forms a pair of twin primes.

It is equal to p_6894151 and since 120979321 and 6894151 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (120979301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60489660 + 60489661.

It is an arithmetic number, because the mean of its divisors is an integer number (60489661).

Almost surely, 2^120979321 is an apocalyptic number.

It is an amenable number.

120979321 is a deficient number, since it is larger than the sum of its proper divisors (1).

120979321 is an equidigital number, since it uses as much as digits as its factorization.

120979321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 120979321 is about 10999.0600052914. The cubic root of 120979321 is about 494.5805663719.

The spelling of 120979321 in words is "one hundred twenty million, nine hundred seventy-nine thousand, three hundred twenty-one".