121601011 has 8 divisors (see below), whose sum is σ = 139332960. Its totient is φ = 103959168.

The previous prime is 121601009. The next prime is 121601041. The reversal of 121601011 is 110106121.

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 121601011 - 2¹ = 121601009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121600982 and 121601000.

It is not an unprimeable number, because it can be changed into a prime (121601041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19606 + ... + 25051.

It is an arithmetic number, because the mean of its divisors is an integer number (17416620).

Almost surely, 2^121601011 is an apocalyptic number.

121601011 is a deficient number, since it is larger than the sum of its proper divisors (17731949).

121601011 is an equidigital number, since it uses as much as digits as its factorization.

121601011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45053.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 121601011 is about 11027.2848426074. The cubic root of 121601011 is about 495.4263048598.

Adding to 121601011 its reverse (110106121), we get a palindrome (231707132).

The spelling of 121601011 in words is "one hundred twenty-one million, six hundred one thousand, eleven".