22102323430442 has 4 divisors (see below), whose sum is σ = 33153485145666. Its totient is φ = 11051161715220.

The previous prime is 22102323430433. The next prime is 22102323430471. The reversal of 22102323430442 is 24403432320122.

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., 20395692113281 + 1706631317161 = 4516159^2 + 1306381^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22102323430399 and 22102323430408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5525580857609 + ... + 5525580857612.

Almost surely, 2^{22102323430442} is an apocalyptic number.

22102323430442 is a deficient number, since it is larger than the sum of its proper divisors (11051161715224).

22102323430442 is a wasteful number, since it uses less digits than its factorization.

22102323430442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11051161715223.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 22102323430442 its reverse (24403432320122), we get a palindrome (46505755750564).

The spelling of 22102323430442 in words is "twenty-two trillion, one hundred two billion, three hundred twenty-three million, four hundred thirty thousand, four hundred forty-two".