208122881 has 8 divisors (see below), whose sum is σ = 213702720. Its totient is φ = 202576752.

The previous prime is 208122877. The next prime is 208122899. The reversal of 208122881 is 188221802.

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 208122881 - 2² = 208122877 is a prime.

It is a super-2 number, since 2×208122881² = 86630267191480322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208142881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4340 + ... + 20858.

It is an arithmetic number, because the mean of its divisors is an integer number (26712840).

Almost surely, 2^208122881 is an apocalyptic number.

It is an amenable number.

208122881 is a deficient number, since it is larger than the sum of its proper divisors (5579839).

208122881 is a wasteful number, since it uses less digits than its factorization.

208122881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16855.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 208122881 is about 14426.4646050236. The cubic root of 208122881 is about 592.6158684300.

The spelling of 208122881 in words is "two hundred eight million, one hundred twenty-two thousand, eight hundred eighty-one".