109020559381 has 2 divisors, whose sum is σ = 109020559382. Its totient is φ = 109020559380.

The previous prime is 109020559313. The next prime is 109020559391. The reversal of 109020559381 is 183955020901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70463702500 + 38556856881 = 265450^2 + 196359^2 .

It is a cyclic number.

It is not a de Polignac number, because 109020559381 - 2¹¹ = 109020557333 is a prime.

It is a super-2 number, since 2×109020559381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109020559301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54510279690 + 54510279691.

It is an arithmetic number, because the mean of its divisors is an integer number (54510279691).

Almost surely, 2^109020559381 is an apocalyptic number.

It is an amenable number.

109020559381 is a deficient number, since it is larger than the sum of its proper divisors (1).

109020559381 is an equidigital number, since it uses as much as digits as its factorization.

109020559381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 109020559381 in words is "one hundred nine billion, twenty million, five hundred fifty-nine thousand, three hundred eighty-one".