22154304232 has 8 divisors (see below), whose sum is σ = 41539320450. Its totient is φ = 11077152112.

The previous prime is 22154304229. The next prime is 22154304241. The reversal of 22154304232 is 23240345122.

It can be written as a sum of positive squares in only one way, i.e., 13422149316 + 8732154916 = 115854^2 + 93446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22154304232.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1384644007 + ... + 1384644022.

Almost surely, 2^22154304232 is an apocalyptic number.

It is an amenable number.

22154304232 is a deficient number, since it is larger than the sum of its proper divisors (19385016218).

22154304232 is a wasteful number, since it uses less digits than its factorization.

22154304232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769288035 (or 2769288031 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 22154304232 its reverse (23240345122), we get a palindrome (45394649354).

The spelling of 22154304232 in words is "twenty-two billion, one hundred fifty-four million, three hundred four thousand, two hundred thirty-two".