2116454421 has 8 divisors (see below), whose sum is σ = 2834594560. Its totient is φ = 1404641952.

The previous prime is 2116454401. The next prime is 2116454437. The reversal of 2116454421 is 1244546112.

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

It is not a de Polignac number, because 2116454421 - 2²⁵ = 2082899989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116454401) 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, 1581136 + ... + 1582473.

It is an arithmetic number, because the mean of its divisors is an integer number (354324320).

Almost surely, 2^2116454421 is an apocalyptic number.

It is an amenable number.

2116454421 is a deficient number, since it is larger than the sum of its proper divisors (718140139).

2116454421 is a wasteful number, since it uses less digits than its factorization.

2116454421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163835.

The product of its digits is 7680, while the sum is 30.

The square root of 2116454421 is about 46004.9390935365. The cubic root of 2116454421 is about 1283.9151003880.

The spelling of 2116454421 in words is "two billion, one hundred sixteen million, four hundred fifty-four thousand, four hundred twenty-one".