102210261 has 16 divisors (see below), whose sum is σ = 137955840. Its totient is φ = 67307760.

The previous prime is 102210233. The next prime is 102210271. The reversal of 102210261 is 162012201.

It is not a de Polignac number, because 102210261 - 2⁷ = 102210133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102210261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102210211) 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, 110760 + ... + 111678.

It is an arithmetic number, because the mean of its divisors is an integer number (8622240).

Almost surely, 2^102210261 is an apocalyptic number.

It is an amenable number.

102210261 is a deficient number, since it is larger than the sum of its proper divisors (35745579).

102210261 is a wasteful number, since it uses less digits than its factorization.

102210261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 102210261 is about 10109.9090500360. The cubic root of 102210261 is about 467.5537010195.

Adding to 102210261 its reverse (162012201), we get a palindrome (264222462).

The spelling of 102210261 in words is "one hundred two million, two hundred ten thousand, two hundred sixty-one".