2121034434040 has 32 divisors (see below), whose sum is σ = 4816928677680. Its totient is φ = 840484671232.

The previous prime is 2121034434023. The next prime is 2121034434067. The reversal of 2121034434040 is 404344301212.

It is a super-2 number, since 2×2121034434040² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247780117 + ... + 247788676.

Almost surely, 2^{2121034434040} is an apocalyptic number.

2121034434040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121034434040 is an abundant number, since it is smaller than the sum of its proper divisors (2695894243640).

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

2121034434040 is a wasteful number, since it uses less digits than its factorization.

2121034434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495568911 (or 495568907 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2121034434040 its reverse (404344301212), we get a palindrome (2525378735252).

The spelling of 2121034434040 in words is "two trillion, one hundred twenty-one billion, thirty-four million, four hundred thirty-four thousand, forty".