2113520154421 has 8 divisors (see below), whose sum is σ = 2375059438080. Its totient is φ = 1866118129392.

The previous prime is 2113520154401. The next prime is 2113520154433. The reversal of 2113520154421 is 1244510253112.

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 2113520154421 - 2³³ = 2104930219829 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 (2113520154401) 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, 3534314341 + ... + 3534314938.

It is an arithmetic number, because the mean of its divisors is an integer number (296882429760).

Almost surely, 2^{2113520154421} is an apocalyptic number.

It is an amenable number.

2113520154421 is a deficient number, since it is larger than the sum of its proper divisors (261539283659).

2113520154421 is a wasteful number, since it uses less digits than its factorization.

2113520154421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068629315.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 2113520154421 in words is "two trillion, one hundred thirteen billion, five hundred twenty million, one hundred fifty-four thousand, four hundred twenty-one".