16120121021671 has 2 divisors, whose sum is σ = 16120121021672. Its totient is φ = 16120121021670.

The previous prime is 16120121021639. The next prime is 16120121021681. The reversal of 16120121021671 is 17612012102161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16120121021671 - 2⁵ = 16120121021639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16120121021681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8060060510835 + 8060060510836.

It is an arithmetic number, because the mean of its divisors is an integer number (8060060510836).

Almost surely, 2^{16120121021671} is an apocalyptic number.

16120121021671 is a deficient number, since it is larger than the sum of its proper divisors (1).

16120121021671 is an equidigital number, since it uses as much as digits as its factorization.

16120121021671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 16120121021671 in words is "sixteen trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, six hundred seventy-one".