121011872 has 24 divisors (see below), whose sum is σ = 238543956. Its totient is φ = 60429312.

The previous prime is 121011859. The next prime is 121011907. The reversal of 121011872 is 278110121.

It can be written as a sum of positive squares in 2 ways, for example, as 120912016 + 99856 = 10996^2 + 316^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30008 + ... + 33800.

Almost surely, 2^121011872 is an apocalyptic number.

It is an amenable number.

121011872 is a deficient number, since it is larger than the sum of its proper divisors (117532084).

121011872 is an equidigital number, since it uses as much as digits as its factorization.

121011872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 4792 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 121011872 is about 11000.5396231276. The cubic root of 121011872 is about 494.6249200907.

Adding to 121011872 its reverse (278110121), we get a palindrome (399121993).

The spelling of 121011872 in words is "one hundred twenty-one million, eleven thousand, eight hundred seventy-two".