101612261 has 4 divisors (see below), whose sum is σ = 103774272. Its totient is φ = 99450252.

The previous prime is 101612233. The next prime is 101612297. The reversal of 101612261 is 162216101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162216101 = 2647 ⋅61283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101612261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101617261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1080935 + ... + 1081028.

It is an arithmetic number, because the mean of its divisors is an integer number (25943568).

Almost surely, 2^101612261 is an apocalyptic number.

It is an amenable number.

101612261 is a deficient number, since it is larger than the sum of its proper divisors (2162011).

101612261 is an equidigital number, since it uses as much as digits as its factorization.

101612261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162010.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 101612261 is about 10080.2907200140. The cubic root of 101612261 is about 466.6400805149.

Adding to 101612261 its reverse (162216101), we get a palindrome (263828362).

The spelling of 101612261 in words is "one hundred one million, six hundred twelve thousand, two hundred sixty-one".