121120506 has 24 divisors (see below), whose sum is σ = 282615060. Its totient is φ = 37267776.

The previous prime is 121120487. The next prime is 121120511. The reversal of 121120506 is 605021121.

It can be written as a sum of positive squares in 2 ways, for example, as 103856481 + 17264025 = 10191^2 + 4155^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258571 + ... + 259038.

Almost surely, 2^121120506 is an apocalyptic number.

121120506 is an abundant number, since it is smaller than the sum of its proper divisors (161494554).

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

121120506 is a wasteful number, since it uses less digits than its factorization.

121120506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517630 (or 517627 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 121120506 is about 11005.4761823376. The cubic root of 121120506 is about 494.7728863238.

Adding to 121120506 its reverse (605021121), we get a palindrome (726141627).

The spelling of 121120506 in words is "one hundred twenty-one million, one hundred twenty thousand, five hundred six".