103121211 has 8 divisors (see below), whose sum is σ = 138371344. Its totient is φ = 68309280.

The previous prime is 103121209. The next prime is 103121237. The reversal of 103121211 is 112121301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103121211 - 2¹ = 103121209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103123211) 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, 109000 + ... + 109941.

It is an arithmetic number, because the mean of its divisors is an integer number (17296418).

Almost surely, 2^103121211 is an apocalyptic number.

103121211 is a deficient number, since it is larger than the sum of its proper divisors (35250133).

103121211 is a wasteful number, since it uses less digits than its factorization.

103121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219101.

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

The square root of 103121211 is about 10154.8614466176. The cubic root of 103121211 is about 468.9386204819.

Adding to 103121211 its reverse (112121301), we get a palindrome (215242512).

The spelling of 103121211 in words is "one hundred three million, one hundred twenty-one thousand, two hundred eleven".