22142421412402 has 4 divisors (see below), whose sum is σ = 33213632118606. Its totient is φ = 11071210706200.

The previous prime is 22142421412387. The next prime is 22142421412403. The reversal of 22142421412402 is 20421412424122.

It is a happy number.

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., 15062091142081 + 7080330270321 = 3880991^2 + 2660889^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22142421412403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535605353099 + ... + 5535605353102.

Almost surely, 2^{22142421412402} is an apocalyptic number.

22142421412402 is a deficient number, since it is larger than the sum of its proper divisors (11071210706204).

22142421412402 is a wasteful number, since it uses less digits than its factorization.

22142421412402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11071210706203.

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 22142421412402 its reverse (20421412424122), we get a palindrome (42563833836524).

The spelling of 22142421412402 in words is "twenty-two trillion, one hundred forty-two billion, four hundred twenty-one million, four hundred twelve thousand, four hundred two".