2105213162971 has 2 divisors, whose sum is σ = 2105213162972. Its totient is φ = 2105213162970.

The previous prime is 2105213162959. The next prime is 2105213163061. The reversal of 2105213162971 is 1792613125012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105213162971 - 2⁵ = 2105213162939 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105213162671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052606581485 + 1052606581486.

It is an arithmetic number, because the mean of its divisors is an integer number (1052606581486).

Almost surely, 2^{2105213162971} is an apocalyptic number.

2105213162971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105213162971 is an equidigital number, since it uses as much as digits as its factorization.

2105213162971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

Adding to 2105213162971 its reverse (1792613125012), we get a palindrome (3897826287983).

The spelling of 2105213162971 in words is "two trillion, one hundred five billion, two hundred thirteen million, one hundred sixty-two thousand, nine hundred seventy-one".