99421404154151 has 2 divisors, whose sum is σ = 99421404154152. Its totient is φ = 99421404154150.

The previous prime is 99421404154049. The next prime is 99421404154153. The reversal of 99421404154151 is 15145140412499.

It is a strong prime.

It is an emirp because it is prime and its reverse (15145140412499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99421404154151 - 2¹⁴ = 99421404137767 is a prime.

Together with 99421404154153, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99421404154151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99421404154153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49710702077075 + 49710702077076.

It is an arithmetic number, because the mean of its divisors is an integer number (49710702077076).

Almost surely, 2^{99421404154151} is an apocalyptic number.

99421404154151 is a deficient number, since it is larger than the sum of its proper divisors (1).

99421404154151 is an equidigital number, since it uses as much as digits as its factorization.

99421404154151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 99421404154151 in words is "ninety-nine trillion, four hundred twenty-one billion, four hundred four million, one hundred fifty-four thousand, one hundred fifty-one".