121949121 has 8 divisors (see below), whose sum is σ = 185827264. Its totient is φ = 69685200.

The previous prime is 121949119. The next prime is 121949153.

It is a happy number.

121949121 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121949121 - 2¹ = 121949119 is a prime.

It is a super-2 number, since 2×121949121² = 29743176225345282, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121949101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2903530 + ... + 2903571.

It is an arithmetic number, because the mean of its divisors is an integer number (23228408).

Almost surely, 2^121949121 is an apocalyptic number.

It is an amenable number.

121949121 is a deficient number, since it is larger than the sum of its proper divisors (63878143).

121949121 is an equidigital number, since it uses as much as digits as its factorization.

121949121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5807111.

The product of its digits is 1296, while the sum is 30.

The square root of 121949121 is about 11043.0575928952. The cubic root of 121949121 is about 495.8986105303.

The spelling of 121949121 in words is "one hundred twenty-one million, nine hundred forty-nine thousand, one hundred twenty-one".