2123142121240 has 64 divisors (see below), whose sum is σ = 5464898487360. Its totient is φ = 727215751680.

The previous prime is 2123142121229. The next prime is 2123142121273. The reversal of 2123142121240 is 421212413212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3459031 + ... + 4026310.

It is an arithmetic number, because the mean of its divisors is an integer number (85389038865).

Almost surely, 2^{2123142121240} is an apocalyptic number.

2123142121240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123142121240 is an abundant number, since it is smaller than the sum of its proper divisors (3341756366120).

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

2123142121240 is a wasteful number, since it uses less digits than its factorization.

2123142121240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7486372 (or 7486368 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 2123142121240 its reverse (421212413212), we get a palindrome (2544354534452).

The spelling of 2123142121240 in words is "two trillion, one hundred twenty-three billion, one hundred forty-two million, one hundred twenty-one thousand, two hundred forty".