121001153 has 32 divisors (see below), whose sum is σ = 156549120. Its totient is φ = 90953280.

The previous prime is 121001141. The next prime is 121001161. The reversal of 121001153 is 351100121.

It is a cyclic number.

It is not a de Polignac number, because 121001153 - 2⁸ = 121000897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121001113) 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 31 ways as a sum of consecutive naturals, for example, 166076 + ... + 166802.

It is an arithmetic number, because the mean of its divisors is an integer number (4892160).

Almost surely, 2^121001153 is an apocalyptic number.

121001153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121001153 is a deficient number, since it is larger than the sum of its proper divisors (35547967).

121001153 is a wasteful number, since it uses less digits than its factorization.

121001153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 121001153 is about 11000.0524089661. The cubic root of 121001153 is about 494.6103153499.

Adding to 121001153 its reverse (351100121), we get a palindrome (472101274).

The spelling of 121001153 in words is "one hundred twenty-one million, one thousand, one hundred fifty-three".