102208881 has 4 divisors (see below), whose sum is σ = 136278512. Its totient is φ = 68139252.

The previous prime is 102208877. The next prime is 102208889. The reversal of 102208881 is 188802201.

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 not a de Polignac number, because 102208881 - 2² = 102208877 is a prime.

It is a super-2 number, since 2×102208881² = 20893310710544322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102208889) 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, 17034811 + ... + 17034816.

It is an arithmetic number, because the mean of its divisors is an integer number (34069628).

Almost surely, 2^102208881 is an apocalyptic number.

It is an amenable number.

102208881 is a deficient number, since it is larger than the sum of its proper divisors (34069631).

102208881 is an equidigital number, since it uses as much as digits as its factorization.

102208881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34069630.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 102208881 is about 10109.8407999335. The cubic root of 102208881 is about 467.5515967721.

The spelling of 102208881 in words is "one hundred two million, two hundred eight thousand, eight hundred eighty-one".