103211121 has 16 divisors (see below), whose sum is σ = 152983040. Its totient is φ = 61464960.

The previous prime is 103211117. The next prime is 103211153. The reversal of 103211121 is 121112301.

It is not a de Polignac number, because 103211121 - 2² = 103211117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103211097 and 103211106.

It is not an unprimeable number, because it can be changed into a prime (103211621) 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, 41476 + ... + 43893.

It is an arithmetic number, because the mean of its divisors is an integer number (9561440).

Almost surely, 2^103211121 is an apocalyptic number.

It is an amenable number.

103211121 is a deficient number, since it is larger than the sum of its proper divisors (49771919).

103211121 is a wasteful number, since it uses less digits than its factorization.

103211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85416.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 103211121 is about 10159.2874257991. The cubic root of 103211121 is about 469.0748679888.

Adding to 103211121 its reverse (121112301), we get a palindrome (224323422).

The spelling of 103211121 in words is "one hundred three million, two hundred eleven thousand, one hundred twenty-one".