2106654224681 has 2 divisors, whose sum is σ = 2106654224682. Its totient is φ = 2106654224680.

The previous prime is 2106654224669. The next prime is 2106654224687. The reversal of 2106654224681 is 1864224566012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1560540614656 + 546113610025 = 1249216^2 + 738995^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106654224681 - 2¹⁰ = 2106654223657 is a prime.

It is a super-2 number, since 2×2106654224681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2106654224687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053327112340 + 1053327112341.

It is an arithmetic number, because the mean of its divisors is an integer number (1053327112341).

Almost surely, 2^{2106654224681} is an apocalyptic number.

It is an amenable number.

2106654224681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106654224681 is an equidigital number, since it uses as much as digits as its factorization.

2106654224681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 2106654224681 in words is "two trillion, one hundred six billion, six hundred fifty-four million, two hundred twenty-four thousand, six hundred eighty-one".