2125291771 has 8 divisors (see below), whose sum is σ = 2250715680. Its totient is φ = 1999913088.

The previous prime is 2125291741. The next prime is 2125291781. The reversal of 2125291771 is 1771925212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2125291771 - 2⁵ = 2125291739 is a prime.

It is a super-2 number, since 2×2125291771² = 9033730223760632882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2125291771.

It is not an unprimeable number, because it can be changed into a prime (2125291711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158050 + ... + 170968.

It is an arithmetic number, because the mean of its divisors is an integer number (281339460).

Almost surely, 2^2125291771 is an apocalyptic number.

2125291771 is a deficient number, since it is larger than the sum of its proper divisors (125423909).

2125291771 is a wasteful number, since it uses less digits than its factorization.

2125291771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22613.

The product of its digits is 17640, while the sum is 37.

The square root of 2125291771 is about 46100.8868786708. The cubic root of 2125291771 is about 1285.6996338442.

The spelling of 2125291771 in words is "two billion, one hundred twenty-five million, two hundred ninety-one thousand, seven hundred seventy-one".