10121112440 has 16 divisors (see below), whose sum is σ = 22772503080. Its totient is φ = 4048444960.

The previous prime is 10121112439. The next prime is 10121112457. The reversal of 10121112440 is 4421112101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126513866 + ... + 126513945.

Almost surely, 2^10121112440 is an apocalyptic number.

10121112440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121112440 is an abundant number, since it is smaller than the sum of its proper divisors (12651390640).

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

10121112440 is a wasteful number, since it uses less digits than its factorization.

10121112440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253027822 (or 253027818 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10121112440 its reverse (4421112101), we get a palindrome (14542224541).

The spelling of 10121112440 in words is "ten billion, one hundred twenty-one million, one hundred twelve thousand, four hundred forty".