21442553033101 has 16 divisors (see below), whose sum is σ = 21784622739264. Its totient is φ = 21102541001344.

The previous prime is 21442553033039. The next prime is 21442553033113. The reversal of 21442553033101 is 10133035524412.

It is a cyclic number.

It is not a de Polignac number, because 21442553033101 - 2⁷ = 21442553032973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442553033141) 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, 54936705 + ... + 55325641.

It is an arithmetic number, because the mean of its divisors is an integer number (1361538921204).

Almost surely, 2^{21442553033101} is an apocalyptic number.

It is an amenable number.

21442553033101 is a deficient number, since it is larger than the sum of its proper divisors (342069706163).

21442553033101 is a wasteful number, since it uses less digits than its factorization.

21442553033101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391580.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 21442553033101 its reverse (10133035524412), we get a palindrome (31575588557513).

The spelling of 21442553033101 in words is "twenty-one trillion, four hundred forty-two billion, five hundred fifty-three million, thirty-three thousand, one hundred one".