121032105 has 16 divisors (see below), whose sum is σ = 193948224. Its totient is φ = 64451520.

The previous prime is 121032101. The next prime is 121032133. The reversal of 121032105 is 501230121.

It is not a de Polignac number, because 121032105 - 2² = 121032101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121032101) 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, 4527 + ... + 16203.

It is an arithmetic number, because the mean of its divisors is an integer number (12121764).

Almost surely, 2^121032105 is an apocalyptic number.

121032105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121032105 is a deficient number, since it is larger than the sum of its proper divisors (72916119).

121032105 is a wasteful number, since it uses less digits than its factorization.

121032105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12376.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 121032105 is about 11001.4592213942. The cubic root of 121032105 is about 494.6524853979.

Adding to 121032105 its reverse (501230121), we get a palindrome (622262226).

The spelling of 121032105 in words is "one hundred twenty-one million, thirty-two thousand, one hundred five".