102861121 has 4 divisors (see below), whose sum is σ = 112212144. Its totient is φ = 93510100.

The previous prime is 102861113. The next prime is 102861139. The reversal of 102861121 is 121168201.

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.

It is a cyclic number.

It is not a de Polignac number, because 102861121 - 2³ = 102861113 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 102861092 and 102861101.

It is not an unprimeable number, because it can be changed into a prime (102861151) 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, 4675495 + ... + 4675516.

It is an arithmetic number, because the mean of its divisors is an integer number (28053036).

Almost surely, 2^102861121 is an apocalyptic number.

102861121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102861121 is a deficient number, since it is larger than the sum of its proper divisors (9351023).

102861121 is an equidigital number, since it uses as much as digits as its factorization.

102861121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9351022.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 102861121 is about 10142.0471799336. The cubic root of 102861121 is about 468.5440397462.

The spelling of 102861121 in words is "one hundred two million, eight hundred sixty-one thousand, one hundred twenty-one".