154122221451 has 16 divisors (see below), whose sum is σ = 226272901248. Its totient is φ = 92534438400.

The previous prime is 154122221369. The next prime is 154122221467.

154122221451 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 154122221451 - 2⁹ = 154122220939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154122231451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21820630 + ... + 21827691.

It is an arithmetic number, because the mean of its divisors is an integer number (14142056328).

Almost surely, 2^154122221451 is an apocalyptic number.

154122221451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154122221451 is a deficient number, since it is larger than the sum of its proper divisors (72150679797).

154122221451 is a wasteful number, since it uses less digits than its factorization.

154122221451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43648442.

The product of its digits is 6400, while the sum is 30.

It can be divided in two parts, 154122 and 221451, that added together give a palindrome (375573).

The spelling of 154122221451 in words is "one hundred fifty-four billion, one hundred twenty-two million, two hundred twenty-one thousand, four hundred fifty-one".