119681621 has 2 divisors, whose sum is σ = 119681622. Its totient is φ = 119681620.

The previous prime is 119681591. The next prime is 119681623. The reversal of 119681621 is 126186911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116942596 + 2739025 = 10814^2 + 1655^2 .

It is an emirp because it is prime and its reverse (126186911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 119681621 - 2¹⁴ = 119665237 is a prime.

Together with 119681623, 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 (119681623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59840810 + 59840811.

It is an arithmetic number, because the mean of its divisors is an integer number (59840811).

Almost surely, 2^119681621 is an apocalyptic number.

It is an amenable number.

119681621 is a deficient number, since it is larger than the sum of its proper divisors (1).

119681621 is an equidigital number, since it uses as much as digits as its factorization.

119681621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 35.

The square root of 119681621 is about 10939.9095517285. The cubic root of 119681621 is about 492.8058117713.

The spelling of 119681621 in words is "one hundred nineteen million, six hundred eighty-one thousand, six hundred twenty-one".