2125117801 has 3 divisors (see below), whose sum is σ = 2125163901. Its totient is φ = 2125071702.

The previous prime is 2125117777. The next prime is 2125117811. The reversal of 2125117801 is 1087115212.

The square root of 2125117801 is 46099.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2125117801 - 2¹⁵ = 2125085033 is a prime.

It is a super-2 number, since 2×2125117801² = 9032251336254151202, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2125117801.

It is not an unprimeable number, because it can be changed into a prime (2125117811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23050 + ... + 69148.

It is an arithmetic number, because the mean of its divisors is an integer number (708387967).

Almost surely, 2^2125117801 is an apocalyptic number.

2125117801 is the 46099-th square number.

2125117801 is the 23050-th centered octagonal number.

It is an amenable number.

2125117801 is a deficient number, since it is larger than the sum of its proper divisors (46100).

2125117801 is an frugal number, since it uses more digits than its factorization.

2125117801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92198 (or 46099 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 28.

The cubic root of 2125117801 is about 1285.6645517170.

The spelling of 2125117801 in words is "two billion, one hundred twenty-five million, one hundred seventeen thousand, eight hundred one".