2201878123 has 4 divisors (see below), whose sum is σ = 2203258480. Its totient is φ = 2200497768.

The previous prime is 2201878117. The next prime is 2201878127. The reversal of 2201878123 is 3218781022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2201878123 - 2¹³ = 2201869931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201878127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687783 + ... + 690976.

It is an arithmetic number, because the mean of its divisors is an integer number (550814620).

Almost surely, 2^2201878123 is an apocalyptic number.

2201878123 is a deficient number, since it is larger than the sum of its proper divisors (1380357).

2201878123 is a wasteful number, since it uses less digits than its factorization.

2201878123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380356.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 2201878123 is about 46924.1741855944. The cubic root of 2201878123 is about 1300.9614432064.

The spelling of 2201878123 in words is "two billion, two hundred one million, eight hundred seventy-eight thousand, one hundred twenty-three".