2187185522051 has 2 divisors, whose sum is σ = 2187185522052. Its totient is φ = 2187185522050.

The previous prime is 2187185522023. The next prime is 2187185522059. The reversal of 2187185522051 is 1502255817812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2187185522051 - 2¹⁴ = 2187185505667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2187185521987 and 2187185522005.

It is not a weakly prime, because it can be changed into another prime (2187185522059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093592761025 + 1093592761026.

It is an arithmetic number, because the mean of its divisors is an integer number (1093592761026).

Almost surely, 2^{2187185522051} is an apocalyptic number.

2187185522051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187185522051 is an equidigital number, since it uses as much as digits as its factorization.

2187185522051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448000, while the sum is 47.

The spelling of 2187185522051 in words is "two trillion, one hundred eighty-seven billion, one hundred eighty-five million, five hundred twenty-two thousand, fifty-one".