121123100240 has 20 divisors (see below), whose sum is σ = 281611208244. Its totient is φ = 48449240064.

The previous prime is 121123100207. The next prime is 121123100291. The reversal of 121123100240 is 42001321121.

It can be written as a sum of positive squares in 2 ways, for example, as 87147763264 + 33975336976 = 295208^2 + 184324^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 757019297 + ... + 757019456.

Almost surely, 2^121123100240 is an apocalyptic number.

121123100240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121123100240 is an abundant number, since it is smaller than the sum of its proper divisors (160488108004).

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

121123100240 is a wasteful number, since it uses less digits than its factorization.

121123100240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514038766 (or 1514038760 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121123100240 its reverse (42001321121), we get a palindrome (163124421361).

The spelling of 121123100240 in words is "one hundred twenty-one billion, one hundred twenty-three million, one hundred thousand, two hundred forty".