101121321 has 32 divisors (see below), whose sum is σ = 164118528. Its totient is φ = 54063360.

The previous prime is 101121311. The next prime is 101121323. The reversal of 101121321 is 123121101.

It is not a de Polignac number, because 101121321 - 2⁶ = 101121257 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101121297 and 101121306.

It is not an unprimeable number, because it can be changed into a prime (101121323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67446 + ... + 68928.

It is an arithmetic number, because the mean of its divisors is an integer number (5128704).

Almost surely, 2^101121321 is an apocalyptic number.

It is an amenable number.

101121321 is a deficient number, since it is larger than the sum of its proper divisors (62997207).

101121321 is a wasteful number, since it uses less digits than its factorization.

101121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701.

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

The square root of 101121321 is about 10055.9097549650. The cubic root of 101121321 is about 465.8873425225.

Adding to 101121321 its reverse (123121101), we get a palindrome (224242422).

The spelling of 101121321 in words is "one hundred one million, one hundred twenty-one thousand, three hundred twenty-one".