2105400351113 has 2 divisors, whose sum is σ = 2105400351114. Its totient is φ = 2105400351112.

The previous prime is 2105400351107. The next prime is 2105400351139. The reversal of 2105400351113 is 3111530045012.

It is an a-pointer prime, because the next prime (2105400351139) can be obtained adding 2105400351113 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2104713282169 + 687068944 = 1450763^2 + 26212^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105400351113 - 2⁸ = 2105400350857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105400351193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052700175556 + 1052700175557.

It is an arithmetic number, because the mean of its divisors is an integer number (1052700175557).

Almost surely, 2^{2105400351113} is an apocalyptic number.

It is an amenable number.

2105400351113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105400351113 is an equidigital number, since it uses as much as digits as its factorization.

2105400351113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 2105400351113 its reverse (3111530045012), we get a palindrome (5216930396125).

The spelling of 2105400351113 in words is "two trillion, one hundred five billion, four hundred million, three hundred fifty-one thousand, one hundred thirteen".