22154044002 has 16 divisors (see below), whose sum is σ = 45505604352. Its totient is φ = 7185095280.

The previous prime is 22154044001. The next prime is 22154044009. The reversal of 22154044002 is 20044045122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22154044001) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 49896274 + ... + 49896717.

It is an arithmetic number, because the mean of its divisors is an integer number (2844100272).

Almost surely, 2^22154044002 is an apocalyptic number.

22154044002 is an abundant number, since it is smaller than the sum of its proper divisors (23351560350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22154044002 is a wasteful number, since it uses less digits than its factorization.

22154044002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99793033.

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 22154044002 its reverse (20044045122), we get a palindrome (42198089124).

The spelling of 22154044002 in words is "twenty-two billion, one hundred fifty-four million, forty-four thousand, two".