2121759112938 has 8 divisors (see below), whose sum is σ = 4243518225888. Its totient is φ = 707253037644.

The previous prime is 2121759112933. The next prime is 2121759112973. The reversal of 2121759112938 is 8392119571212.

It is a sphenic number, since it is the product of 3 distinct primes.

2121759112938 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2121759112933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176813259406 + ... + 176813259417.

It is an arithmetic number, because the mean of its divisors is an integer number (530439778236).

Almost surely, 2^{2121759112938} is an apocalyptic number.

2121759112938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2121759112938 is a wasteful number, since it uses less digits than its factorization.

2121759112938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353626518828.

The product of its digits is 544320, while the sum is 51.

The spelling of 2121759112938 in words is "two trillion, one hundred twenty-one billion, seven hundred fifty-nine million, one hundred twelve thousand, nine hundred thirty-eight".