2113311102421 has 2 divisors, whose sum is σ = 2113311102422. Its totient is φ = 2113311102420.

The previous prime is 2113311102391. The next prime is 2113311102433. The reversal of 2113311102421 is 1242011133112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1911610412100 + 201700690321 = 1382610^2 + 449111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113311102421 - 2¹³ = 2113311094229 is a prime.

It is a super-2 number, since 2×2113311102421² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113311102392 and 2113311102401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113311102491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056655551210 + 1056655551211.

It is an arithmetic number, because the mean of its divisors is an integer number (1056655551211).

Almost surely, 2^{2113311102421} is an apocalyptic number.

It is an amenable number.

2113311102421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113311102421 is an equidigital number, since it uses as much as digits as its factorization.

2113311102421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 2113311102421 its reverse (1242011133112), we get a palindrome (3355322235533).

The spelling of 2113311102421 in words is "two trillion, one hundred thirteen billion, three hundred eleven million, one hundred two thousand, four hundred twenty-one".