21444014121131 has 16 divisors (see below), whose sum is σ = 25094716399104. Its totient is φ = 17940720599424.

The previous prime is 21444014121077. The next prime is 21444014121133. The reversal of 21444014121131 is 13112141044412.

It is not a de Polignac number, because 21444014121131 - 2⁶ = 21444014121067 is a prime.

It is a super-2 number, since 2×21444014121131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21444014121094 and 21444014121103.

It is not an unprimeable number, because it can be changed into a prime (21444014121133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24181790 + ... + 25052883.

It is an arithmetic number, because the mean of its divisors is an integer number (1568419774944).

Almost surely, 2^{21444014121131} is an apocalyptic number.

21444014121131 is a deficient number, since it is larger than the sum of its proper divisors (3650702277973).

21444014121131 is a wasteful number, since it uses less digits than its factorization.

21444014121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49236170.

The product of its (nonzero) digits is 3072, while the sum is 29.

Adding to 21444014121131 its reverse (13112141044412), we get a palindrome (34556155165543).

The spelling of 21444014121131 in words is "twenty-one trillion, four hundred forty-four billion, fourteen million, one hundred twenty-one thousand, one hundred thirty-one".