101206155 has 16 divisors (see below), whose sum is σ = 162418464. Its totient is φ = 53813760.

The previous prime is 101206153. The next prime is 101206213. The reversal of 101206155 is 551602101.

It is not a de Polignac number, because 101206155 - 2¹ = 101206153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101206153) 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, 4956 + ... + 15065.

It is an arithmetic number, because the mean of its divisors is an integer number (10151154).

Almost surely, 2^101206155 is an apocalyptic number.

101206155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101206155 is a deficient number, since it is larger than the sum of its proper divisors (61212309).

101206155 is a wasteful number, since it uses less digits than its factorization.

101206155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20366.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 101206155 is about 10060.1269872701. The cubic root of 101206155 is about 466.0175888417.

Adding to 101206155 its reverse (551602101), we get a palindrome (652808256).

The spelling of 101206155 in words is "one hundred one million, two hundred six thousand, one hundred fifty-five".