111362921 has 2 divisors, whose sum is σ = 111362922. Its totient is φ = 111362920.

The previous prime is 111362899. The next prime is 111362957. The reversal of 111362921 is 129263111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60668521 + 50694400 = 7789^2 + 7120^2 .

It is a cyclic number.

It is not a de Polignac number, because 111362921 - 2¹⁴ = 111346537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111362981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55681460 + 55681461.

It is an arithmetic number, because the mean of its divisors is an integer number (55681461).

Almost surely, 2^111362921 is an apocalyptic number.

It is an amenable number.

111362921 is a deficient number, since it is larger than the sum of its proper divisors (1).

111362921 is an equidigital number, since it uses as much as digits as its factorization.

111362921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 26.

The square root of 111362921 is about 10552.8631659849. The cubic root of 111362921 is about 481.1127554667.

The spelling of 111362921 in words is "one hundred eleven million, three hundred sixty-two thousand, nine hundred twenty-one".