103661121 has 12 divisors (see below), whose sum is σ = 146824592. Its totient is φ = 65041728.

The previous prime is 103661113. The next prime is 103661123. The reversal of 103661121 is 121166301.

It is not a de Polignac number, because 103661121 - 2³ = 103661113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103661123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58915 + ... + 60648.

Almost surely, 2^103661121 is an apocalyptic number.

It is an amenable number.

103661121 is a deficient number, since it is larger than the sum of its proper divisors (43163471).

103661121 is a wasteful number, since it uses less digits than its factorization.

103661121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119600 (or 119583 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 103661121 is about 10181.4105604283. The cubic root of 103661121 is about 469.7556010172.

The spelling of 103661121 in words is "one hundred three million, six hundred sixty-one thousand, one hundred twenty-one".