2113200001421 has 2 divisors, whose sum is σ = 2113200001422. Its totient is φ = 2113200001420.

The previous prime is 2113200001373. The next prime is 2113200001427. The reversal of 2113200001421 is 1241000023112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1772996108521 + 340203892900 = 1331539^2 + 583270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113200001421 - 2³⁴ = 2096020132237 is a prime.

It is a super-2 number, since 2×2113200001421² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2113200001421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113200001427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056600000710 + 1056600000711.

It is an arithmetic number, because the mean of its divisors is an integer number (1056600000711).

Almost surely, 2^{2113200001421} is an apocalyptic number.

It is an amenable number.

2113200001421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113200001421 is an equidigital number, since it uses as much as digits as its factorization.

2113200001421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2113200001421 its reverse (1241000023112), we get a palindrome (3354200024533).

The spelling of 2113200001421 in words is "two trillion, one hundred thirteen billion, two hundred million, one thousand, four hundred twenty-one".