2121166150651 has 2 divisors, whose sum is σ = 2121166150652. Its totient is φ = 2121166150650.

The previous prime is 2121166150639. The next prime is 2121166150673. The reversal of 2121166150651 is 1560516611212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121166150651 - 2¹¹ = 2121166148603 is a prime.

It is a super-3 number, since 3×2121166150651³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121166150651.

It is not a weakly prime, because it can be changed into another prime (2121166157651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060583075325 + 1060583075326.

It is an arithmetic number, because the mean of its divisors is an integer number (1060583075326).

Almost surely, 2^{2121166150651} is an apocalyptic number.

2121166150651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121166150651 is an equidigital number, since it uses as much as digits as its factorization.

2121166150651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 2121166150651 in words is "two trillion, one hundred twenty-one billion, one hundred sixty-six million, one hundred fifty thousand, six hundred fifty-one".