22131310120442 has 4 divisors (see below), whose sum is σ = 33196965180666. Its totient is φ = 11065655060220.

The previous prime is 22131310120417. The next prime is 22131310120471. The reversal of 22131310120442 is 24402101313122.

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., 19675886934001 + 2455423186441 = 4435751^2 + 1566979^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5532827530109 + ... + 5532827530112.

Almost surely, 2^{22131310120442} is an apocalyptic number.

22131310120442 is a deficient number, since it is larger than the sum of its proper divisors (11065655060224).

22131310120442 is a wasteful number, since it uses less digits than its factorization.

22131310120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11065655060223.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 22131310120442 its reverse (24402101313122), we get a palindrome (46533411433564).

The spelling of 22131310120442 in words is "twenty-two trillion, one hundred thirty-one billion, three hundred ten million, one hundred twenty thousand, four hundred forty-two".