109121001 has 16 divisors (see below), whose sum is σ = 159253248. Its totient is φ = 65912400.

The previous prime is 109120987. The next prime is 109121003. The reversal of 109121001 is 100121901.

It is not a de Polignac number, because 109121001 - 2⁷ = 109120873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4746 + ... + 15516.

It is an arithmetic number, because the mean of its divisors is an integer number (9953328).

Almost surely, 2^109121001 is an apocalyptic number.

109121001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109121001 is a deficient number, since it is larger than the sum of its proper divisors (50132247).

109121001 is a wasteful number, since it uses less digits than its factorization.

109121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11092.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 109121001 is about 10446.0997984894. The cubic root of 109121001 is about 477.8623124844.

Adding to 109121001 its reverse (100121901), we get a palindrome (209242902).

The spelling of 109121001 in words is "one hundred nine million, one hundred twenty-one thousand, one".