21444022311031 has 8 divisors (see below), whose sum is σ = 21764896230384. Its totient is φ = 21123172329600.

The previous prime is 21444022311017. The next prime is 21444022311037. The reversal of 21444022311031 is 13011322044412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21444022311031 - 2²⁵ = 21443988756599 is a prime.

It is a super-2 number, since 2×21444022311031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21444022311037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4175380 + ... + 7766713.

It is an arithmetic number, because the mean of its divisors is an integer number (2720612028798).

Almost surely, 2^{21444022311031} is an apocalyptic number.

21444022311031 is a deficient number, since it is larger than the sum of its proper divisors (320873919353).

21444022311031 is a wasteful number, since it uses less digits than its factorization.

21444022311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11968961.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21444022311031 its reverse (13011322044412), we get a palindrome (34455344355443).

The spelling of 21444022311031 in words is "twenty-one trillion, four hundred forty-four billion, twenty-two million, three hundred eleven thousand, thirty-one".