154622232121 has 4 divisors (see below), whose sum is σ = 176711122432. Its totient is φ = 132533341812.

The previous prime is 154622232091. The next prime is 154622232179. The reversal of 154622232121 is 121232226451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121232226451 = 7 ⋅17318889493.

It is a cyclic number.

It is not a de Polignac number, because 154622232121 - 2⁷ = 154622231993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154622232221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11044445145 + ... + 11044445158.

It is an arithmetic number, because the mean of its divisors is an integer number (44177780608).

Almost surely, 2^154622232121 is an apocalyptic number.

It is an amenable number.

154622232121 is a deficient number, since it is larger than the sum of its proper divisors (22088890311).

154622232121 is an equidigital number, since it uses as much as digits as its factorization.

154622232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22088890310.

The product of its digits is 11520, while the sum is 31.

Adding to 154622232121 its reverse (121232226451), we get a palindrome (275854458572).

The spelling of 154622232121 in words is "one hundred fifty-four billion, six hundred twenty-two million, two hundred thirty-two thousand, one hundred twenty-one".