22144401002 has 4 divisors (see below), whose sum is σ = 33216601506. Its totient is φ = 11072200500.

The previous prime is 22144401001. The next prime is 22144401077. The reversal of 22144401002 is 20010444122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17518904881 + 4625496121 = 132359^2 + 68011^2 .

It is not an unprimeable number, because it can be changed into a prime (22144401001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5536100249 + ... + 5536100252.

Almost surely, 2^22144401002 is an apocalyptic number.

22144401002 is a deficient number, since it is larger than the sum of its proper divisors (11072200504).

22144401002 is a wasteful number, since it uses less digits than its factorization.

22144401002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072200503.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22144401002 its reverse (20010444122), we get a palindrome (42154845124).

The spelling of 22144401002 in words is "twenty-two billion, one hundred forty-four million, four hundred one thousand, two".