22012144402 has 4 divisors (see below), whose sum is σ = 33018216606. Its totient is φ = 11006072200.

The previous prime is 22012144393. The next prime is 22012144433. The reversal of 22012144402 is 20444121022.

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., 14455493361 + 7556651041 = 120231^2 + 86929^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5503036099 + ... + 5503036102.

Almost surely, 2^22012144402 is an apocalyptic number.

22012144402 is a deficient number, since it is larger than the sum of its proper divisors (11006072204).

22012144402 is a wasteful number, since it uses less digits than its factorization.

22012144402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11006072203.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22012144402 its reverse (20444121022), we get a palindrome (42456265424).

The spelling of 22012144402 in words is "twenty-two billion, twelve million, one hundred forty-four thousand, four hundred two".