22121000044042 has 32 divisors (see below), whose sum is σ = 34735327248384. Its totient is φ = 10552638625200.

The previous prime is 22121000043953. The next prime is 22121000044049. The reversal of 22121000044042 is 24044000012122.

It is not an unprimeable number, because it can be changed into a prime (22121000044049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223162663 + ... + 223261765.

It is an arithmetic number, because the mean of its divisors is an integer number (1085478976512).

Almost surely, 2^{22121000044042} is an apocalyptic number.

22121000044042 is a deficient number, since it is larger than the sum of its proper divisors (12614327204342).

22121000044042 is a wasteful number, since it uses less digits than its factorization.

22121000044042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149914.

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

Adding to 22121000044042 its reverse (24044000012122), we get a palindrome (46165000056164).

The spelling of 22121000044042 in words is "twenty-two trillion, one hundred twenty-one billion, forty-four thousand, forty-two".