10421121 has 8 divisors (see below), whose sum is σ = 14374080. Its totient is φ = 6707792.

The previous prime is 10421107. The next prime is 10421123. The reversal of 10421121 is 12112401.

It is a happy number.

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 10421121 - 2¹⁵ = 10388353 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10421097 and 10421106.

It is not an unprimeable number, because it can be changed into a prime (10421123) 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, 59805 + ... + 59978.

It is an arithmetic number, because the mean of its divisors is an integer number (1796760).

Almost surely, 2^10421121 is an apocalyptic number.

It is an amenable number.

10421121 is a deficient number, since it is larger than the sum of its proper divisors (3952959).

10421121 is a wasteful number, since it uses less digits than its factorization.

10421121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119815.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 10421121 is about 3228.1761104376. The cubic root of 10421121 is about 218.4262414966.

Adding to 10421121 its reverse (12112401), we get a palindrome (22533522).

The spelling of 10421121 in words is "ten million, four hundred twenty-one thousand, one hundred twenty-one".