154122221369 has 2 divisors, whose sum is σ = 154122221370. Its totient is φ = 154122221368.

The previous prime is 154122221327. The next prime is 154122221467. The reversal of 154122221369 is 963122221451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153856140025 + 266081344 = 392245^2 + 16312^2 .

It is a cyclic number.

It is not a de Polignac number, because 154122221369 - 2¹⁶ = 154122155833 is a prime.

It is a super-2 number, since 2×154122221369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154122221269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77061110684 + 77061110685.

It is an arithmetic number, because the mean of its divisors is an integer number (77061110685).

Almost surely, 2^154122221369 is an apocalyptic number.

It is an amenable number.

154122221369 is a deficient number, since it is larger than the sum of its proper divisors (1).

154122221369 is an equidigital number, since it uses as much as digits as its factorization.

154122221369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The spelling of 154122221369 in words is "one hundred fifty-four billion, one hundred twenty-two million, two hundred twenty-one thousand, three hundred sixty-nine".