101818101 has 32 divisors (see below), whose sum is σ = 175104000. Its totient is φ = 51065280.

The previous prime is 101818039. The next prime is 101818103.

It is a happy number.

101818101 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 101818101 - 2⁶ = 101818037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between odd and even.

101818101 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101818103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 901 + ... + 14298.

It is an arithmetic number, because the mean of its divisors is an integer number (5472000).

Almost surely, 2^101818101 is an apocalyptic number.

101818101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101818101 is a deficient number, since it is larger than the sum of its proper divisors (73285899).

101818101 is a wasteful number, since it uses less digits than its factorization.

101818101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15249.

The product of its (nonzero) digits is 64, while the sum is 21.

The square root of 101818101 is about 10090.4955775224. The cubic root of 101818101 is about 466.9549651116.

The spelling of 101818101 in words is "one hundred one million, eight hundred eighteen thousand, one hundred one".