2113420221 has 16 divisors (see below), whose sum is σ = 3415629120. Its totient is φ = 1280860560.

The previous prime is 2113420193. The next prime is 2113420271. The reversal of 2113420221 is 1220243112.

It is a happy number.

2113420221 is a `hidden beast` number, since 21 + 1 + 3 + 420 + 221 = 666.

It is not a de Polignac number, because 2113420221 - 2⁹ = 2113419709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2113420194 and 2113420203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113420271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3557650 + ... + 3558243.

It is an arithmetic number, because the mean of its divisors is an integer number (213476820).

Almost surely, 2^2113420221 is an apocalyptic number.

It is an amenable number.

2113420221 is a deficient number, since it is larger than the sum of its proper divisors (1302208899).

2113420221 is a wasteful number, since it uses less digits than its factorization.

2113420221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7115913 (or 7115907 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2113420221 is about 45971.9503719388. The cubic root of 2113420221 is about 1283.3012564236.

Adding to 2113420221 its reverse (1220243112), we get a palindrome (3333663333).

The spelling of 2113420221 in words is "two billion, one hundred thirteen million, four hundred twenty thousand, two hundred twenty-one".