20121442130044 has 12 divisors (see below), whose sum is σ = 35213398789464. Its totient is φ = 10060471047344.

The previous prime is 20121442130033. The next prime is 20121442130087. The reversal of 20121442130044 is 44003124412102.

It is a junction number, because it is equal to n+sod(n) for n = 20121442129994 and 20121442130021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62323282 + ... + 62645305.

It is an arithmetic number, because the mean of its divisors is an integer number (2934449899122).

Almost surely, 2^{20121442130044} is an apocalyptic number.

It is an amenable number.

20121442130044 is a deficient number, since it is larger than the sum of its proper divisors (15091956659420).

20121442130044 is a wasteful number, since it uses less digits than its factorization.

20121442130044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125008844 (or 125008842 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 20121442130044 its reverse (44003124412102), we get a palindrome (64124566542146).

The spelling of 20121442130044 in words is "twenty trillion, one hundred twenty-one billion, four hundred forty-two million, one hundred thirty thousand, forty-four".