101561205 has 16 divisors (see below), whose sum is σ = 163200960. Its totient is φ = 53931648.

The previous prime is 101561203. The next prime is 101561221. The reversal of 101561205 is 502165101.

It is not a de Polignac number, because 101561205 - 2¹ = 101561203 is a prime.

It is a super-2 number, since 2×101561205² = 20629356722104050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101561203) 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, 11035 + ... + 18024.

It is an arithmetic number, because the mean of its divisors is an integer number (10200060).

Almost surely, 2^101561205 is an apocalyptic number.

101561205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101561205 is a deficient number, since it is larger than the sum of its proper divisors (61639755).

101561205 is a wasteful number, since it uses less digits than its factorization.

101561205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29300.

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

The square root of 101561205 is about 10077.7579351759. The cubic root of 101561205 is about 466.5619115775.

The spelling of 101561205 in words is "one hundred one million, five hundred sixty-one thousand, two hundred five".