22312315154 has 4 divisors (see below), whose sum is σ = 33468472734. Its totient is φ = 11156157576.

The previous prime is 22312315141. The next prime is 22312315171. The reversal of 22312315154 is 45151321322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45151321322 = 2 ⋅22575660661.

It can be written as a sum of positive squares in only one way, i.e., 19705702129 + 2606613025 = 140377^2 + 51055^2 .

It is a super-3 number, since 3×22312315154³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578078787 + ... + 5578078790.

Almost surely, 2^22312315154 is an apocalyptic number.

22312315154 is a deficient number, since it is larger than the sum of its proper divisors (11156157580).

22312315154 is a wasteful number, since it uses less digits than its factorization.

22312315154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11156157579.

The product of its digits is 7200, while the sum is 29.

Adding to 22312315154 its reverse (45151321322), we get a palindrome (67463636476).

The spelling of 22312315154 in words is "twenty-two billion, three hundred twelve million, three hundred fifteen thousand, one hundred fifty-four".