121105501 has 16 divisors (see below), whose sum is σ = 143149248. Its totient is φ = 101203200.

The previous prime is 121105469. The next prime is 121105529. The reversal of 121105501 is 105501121.

It is a cyclic number.

It is not a de Polignac number, because 121105501 - 2⁵ = 121105469 is a prime.

It is a super-2 number, since 2×121105501² = 29333084744922002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121105531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (8946828).

Almost surely, 2^121105501 is an apocalyptic number.

121105501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121105501 is a deficient number, since it is larger than the sum of its proper divisors (22043747).

121105501 is a wasteful number, since it uses less digits than its factorization.

121105501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15132.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 121105501 is about 11004.7944551454. The cubic root of 121105501 is about 494.7524538526.

Adding to 121105501 its reverse (105501121), we get a palindrome (226606622).

The spelling of 121105501 in words is "one hundred twenty-one million, one hundred five thousand, five hundred one".