154222511121 has 24 divisors (see below), whose sum is σ = 254603348480. Its totient is φ = 88122370176.

The previous prime is 154222511071. The next prime is 154222511137. The reversal of 154222511121 is 121115222451.

154222511121 is a `hidden beast` number, since 1 + 5 + 4 + 2 + 22 + 511 + 121 = 666.

It is not a de Polignac number, because 154222511121 - 2⁷ = 154222510993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154222512121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1338816 + ... + 1449438.

Almost surely, 2^154222511121 is an apocalyptic number.

It is an amenable number.

154222511121 is a deficient number, since it is larger than the sum of its proper divisors (100380837359).

154222511121 is a wasteful number, since it uses less digits than its factorization.

154222511121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132765 (or 132762 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

Adding to 154222511121 its reverse (121115222451), we get a palindrome (275337733572).

The spelling of 154222511121 in words is "one hundred fifty-four billion, two hundred twenty-two million, five hundred eleven thousand, one hundred twenty-one".