2101577123 has 8 divisors (see below), whose sum is σ = 2126274192. Its totient is φ = 2077015936.

The previous prime is 2101577113. The next prime is 2101577131. The reversal of 2101577123 is 3217751012.

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 2101577123 - 2⁶ = 2101577059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101577113) 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, 2690 + ... + 64887.

It is an arithmetic number, because the mean of its divisors is an integer number (265784274).

Almost surely, 2^2101577123 is an apocalyptic number.

2101577123 is a deficient number, since it is larger than the sum of its proper divisors (24697069).

2101577123 is a wasteful number, since it uses less digits than its factorization.

2101577123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67941.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 2101577123 is about 45842.9615426403. The cubic root of 2101577123 is about 1280.8996610949.

The spelling of 2101577123 in words is "two billion, one hundred one million, five hundred seventy-seven thousand, one hundred twenty-three".