2113401421 has 2 divisors, whose sum is σ = 2113401422. Its totient is φ = 2113401420.

The previous prime is 2113401413. The next prime is 2113401463. The reversal of 2113401421 is 1241043112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1981496196 + 131905225 = 44514^2 + 11485^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113401421 - 2³ = 2113401413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113401401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056700710 + 1056700711.

It is an arithmetic number, because the mean of its divisors is an integer number (1056700711).

Almost surely, 2^2113401421 is an apocalyptic number.

It is an amenable number.

2113401421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113401421 is an equidigital number, since it uses as much as digits as its factorization.

2113401421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2113401421 is about 45971.7458989758. The cubic root of 2113401421 is about 1283.2974511959.

Adding to 2113401421 its reverse (1241043112), we get a palindrome (3354444533).

The spelling of 2113401421 in words is "two billion, one hundred thirteen million, four hundred one thousand, four hundred twenty-one".