10211121 has 12 divisors (see below), whose sum is σ = 15225600. Its totient is φ = 6587640.

The previous prime is 10211107. The next prime is 10211129. The reversal of 10211121 is 12111201.

It is a happy number.

It is not a de Polignac number, because 10211121 - 2¹⁰ = 10210097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10211129) 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, 18021 + ... + 18578.

It is an arithmetic number, because the mean of its divisors is an integer number (1268800).

Almost surely, 2^10211121 is an apocalyptic number.

It is an amenable number.

10211121 is a deficient number, since it is larger than the sum of its proper divisors (5014479).

10211121 is a wasteful number, since it uses less digits than its factorization.

10211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36636 (or 36633 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 10211121 is about 3195.4844703112. The cubic root of 10211121 is about 216.9490773642.

Adding to 10211121 its reverse (12111201), we get a palindrome (22322322).

The spelling of 10211121 in words is "ten million, two hundred eleven thousand, one hundred twenty-one".