121223101 has 8 divisors (see below), whose sum is σ = 124500600. Its totient is φ = 117960960.

The previous prime is 121223083. The next prime is 121223117. The reversal of 121223101 is 101322121.

It can be written as a sum of positive squares in 4 ways, for example, as 53144100 + 68079001 = 7290^2 + 8251^2 .

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 121223101 - 2¹³ = 121214909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13155 + ... + 20383.

It is an arithmetic number, because the mean of its divisors is an integer number (15562575).

Almost surely, 2^121223101 is an apocalyptic number.

It is an amenable number.

121223101 is a deficient number, since it is larger than the sum of its proper divisors (3277499).

121223101 is an equidigital number, since it uses as much as digits as its factorization.

121223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121223101 is about 11010.1362843518. The cubic root of 121223101 is about 494.9125458532.

Adding to 121223101 its reverse (101322121), we get a palindrome (222545222).

The spelling of 121223101 in words is "one hundred twenty-one million, two hundred twenty-three thousand, one hundred one".