101231121 has 4 divisors (see below), whose sum is σ = 134974832. Its totient is φ = 67487412.

The previous prime is 101231111. The next prime is 101231131. The reversal of 101231121 is 121132101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (101231111) and next prime (101231131).

It is not a de Polignac number, because 101231121 - 2⁶ = 101231057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101231097 and 101231106.

It is not an unprimeable number, because it can be changed into a prime (101231111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16871851 + ... + 16871856.

It is an arithmetic number, because the mean of its divisors is an integer number (33743708).

Almost surely, 2^101231121 is an apocalyptic number.

It is an amenable number.

101231121 is a deficient number, since it is larger than the sum of its proper divisors (33743711).

101231121 is an equidigital number, since it uses as much as digits as its factorization.

101231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33743710.

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

The square root of 101231121 is about 10061.3677499632. The cubic root of 101231121 is about 466.0559054788.

Adding to 101231121 its reverse (121132101), we get a palindrome (222363222).

The spelling of 101231121 in words is "one hundred one million, two hundred thirty-one thousand, one hundred twenty-one".