21144323033031 has 8 divisors (see below), whose sum is σ = 30755378957184. Its totient is φ = 12814741232120.

The previous prime is 21144323033027. The next prime is 21144323033039. The reversal of 21144323033031 is 13033032344112.

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

It is a cyclic number.

It is not a de Polignac number, because 21144323033031 - 2² = 21144323033027 is a prime.

It is a super-2 number, since 2×21144323033031² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21144323033031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21144323033039) 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, 320368530771 + ... + 320368530836.

It is an arithmetic number, because the mean of its divisors is an integer number (3844422369648).

Almost surely, 2^{21144323033031} is an apocalyptic number.

21144323033031 is a deficient number, since it is larger than the sum of its proper divisors (9611055924153).

21144323033031 is a wasteful number, since it uses less digits than its factorization.

21144323033031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640737061621.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 21144323033031 its reverse (13033032344112), we get a palindrome (34177355377143).

The spelling of 21144323033031 in words is "twenty-one trillion, one hundred forty-four billion, three hundred twenty-three million, thirty-three thousand, thirty-one".