101109155 has 16 divisors (see below), whose sum is σ = 139177920. Its totient is φ = 69075072.

The previous prime is 101109143. The next prime is 101109179. The reversal of 101109155 is 551901101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101109155 is a prime.

It is a super-2 number, since 2×101109155² = 20446122449628050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101109155.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 4481 + ... + 14909.

It is an arithmetic number, because the mean of its divisors is an integer number (8698620).

Almost surely, 2^101109155 is an apocalyptic number.

101109155 is a deficient number, since it is larger than the sum of its proper divisors (38068765).

101109155 is a wasteful number, since it uses less digits than its factorization.

101109155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10718.

The product of its (nonzero) digits is 225, while the sum is 23.

The square root of 101109155 is about 10055.3048188506. The cubic root of 101109155 is about 465.8686579936.

The spelling of 101109155 in words is "one hundred one million, one hundred nine thousand, one hundred fifty-five".