102011261 has 8 divisors (see below), whose sum is σ = 111583200. Its totient is φ = 92489040.

The previous prime is 102011251. The next prime is 102011263. The reversal of 102011261 is 162110201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102011261 - 2²⁶ = 34902397 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 (102011263) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8066 + ... + 16403.

It is an arithmetic number, because the mean of its divisors is an integer number (13947900).

Almost surely, 2^102011261 is an apocalyptic number.

102011261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102011261 is a deficient number, since it is larger than the sum of its proper divisors (9571939).

102011261 is a wasteful number, since it uses less digits than its factorization.

102011261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24859.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 102011261 is about 10100.0624255497. The cubic root of 102011261 is about 467.2500666779.

Adding to 102011261 its reverse (162110201), we get a palindrome (264121462).

The spelling of 102011261 in words is "one hundred two million, eleven thousand, two hundred sixty-one".