2121010109975 has 6 divisors (see below), whose sum is σ = 2630052536400. Its totient is φ = 1696808087960.

The previous prime is 2121010109927. The next prime is 2121010109983. The reversal of 2121010109975 is 5799010101212.

It is a de Polignac number, because none of the positive numbers 2^k-2121010109975 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42420202175 + ... + 42420202224.

It is an arithmetic number, because the mean of its divisors is an integer number (438342089400).

Almost surely, 2^{2121010109975} is an apocalyptic number.

2121010109975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2121010109975 is a deficient number, since it is larger than the sum of its proper divisors (509042426425).

2121010109975 is an equidigital number, since it uses as much as digits as its factorization.

2121010109975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84840404409 (or 84840404404 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 38.

The spelling of 2121010109975 in words is "two trillion, one hundred twenty-one billion, ten million, one hundred nine thousand, nine hundred seventy-five".