109021023 has 6 divisors (see below), whose sum is σ = 157474824. Its totient is φ = 72680676.

The previous prime is 109021007. The next prime is 109021049. The reversal of 109021023 is 320120901.

It is a happy number.

It is not a de Polignac number, because 109021023 - 2⁴ = 109021007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109020987 and 109021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109021093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6056715 + ... + 6056732.

It is an arithmetic number, because the mean of its divisors is an integer number (26245804).

Almost surely, 2^109021023 is an apocalyptic number.

109021023 is a deficient number, since it is larger than the sum of its proper divisors (48453801).

109021023 is a wasteful number, since it uses less digits than its factorization.

109021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12113453 (or 12113450 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 109021023 is about 10441.3132794682. The cubic root of 109021023 is about 477.7163267860.

Adding to 109021023 its reverse (320120901), we get a palindrome (429141924).

Subtracting 109021023 from its reverse (320120901), we obtain a triangular number (211099878 = T₂₀₅₄₇).

The spelling of 109021023 in words is "one hundred nine million, twenty-one thousand, twenty-three".