121045506 has 16 divisors (see below), whose sum is σ = 242200704. Its totient is φ = 40330224.

The previous prime is 121045501. The next prime is 121045511. The reversal of 121045506 is 605540121.

It is an interprime number because it is at equal distance from previous prime (121045501) and next prime (121045511).

It is not an unprimeable number, because it can be changed into a prime (121045501) 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, 19656 + ... + 25068.

It is an arithmetic number, because the mean of its divisors is an integer number (15137544).

Almost surely, 2^121045506 is an apocalyptic number.

121045506 is an abundant number, since it is smaller than the sum of its proper divisors (121155198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121045506 is a wasteful number, since it uses less digits than its factorization.

121045506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9145.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 121045506 is about 11002.0682601046. The cubic root of 121045506 is about 494.6707411418.

Adding to 121045506 its reverse (605540121), we get a palindrome (726585627).

The spelling of 121045506 in words is "one hundred twenty-one million, forty-five thousand, five hundred six".