4012121203040 has 24 divisors (see below), whose sum is σ = 9478636342560. Its totient is φ = 1604848481152.

The previous prime is 4012121203037. The next prime is 4012121203109. The reversal of 4012121203040 is 403021212104.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12537878600 + ... + 12537878919.

It is an arithmetic number, because the mean of its divisors is an integer number (394943180940).

Almost surely, 2^{4012121203040} is an apocalyptic number.

4012121203040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4012121203040 is an abundant number, since it is smaller than the sum of its proper divisors (5466515139520).

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

4012121203040 is a wasteful number, since it uses less digits than its factorization.

4012121203040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25075757534 (or 25075757526 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 4012121203040 its reverse (403021212104), we get a palindrome (4415142415144).

The spelling of 4012121203040 in words is "four trillion, twelve billion, one hundred twenty-one million, two hundred three thousand, forty".