111073621 has 2 divisors, whose sum is σ = 111073622. Its totient is φ = 111073620.

The previous prime is 111073609. The next prime is 111073657. The reversal of 111073621 is 126370111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110880900 + 192721 = 10530^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 111073621 - 2⁷ = 111073493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111073592 and 111073601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111073021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55536810 + 55536811.

It is an arithmetic number, because the mean of its divisors is an integer number (55536811).

Almost surely, 2^111073621 is an apocalyptic number.

It is an amenable number.

111073621 is a deficient number, since it is larger than the sum of its proper divisors (1).

111073621 is an equidigital number, since it uses as much as digits as its factorization.

111073621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 111073621 is about 10539.1470717511. The cubic root of 111073621 is about 480.6957805901.

The spelling of 111073621 in words is "one hundred eleven million, seventy-three thousand, six hundred twenty-one".