21253045160233 has 8 divisors (see below), whose sum is σ = 21939048244736. Its totient is φ = 20567068387200.

The previous prime is 21253045160189. The next prime is 21253045160239. The reversal of 21253045160233 is 33206154035212.

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 21253045160233 - 2⁴¹ = 19054021904681 is a prime.

It is a super-2 number, since 2×21253045160233² (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 = 21253045160192 and 21253045160201.

It is not an unprimeable number, because it can be changed into a prime (21253045160239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4929741 + ... + 8173642.

It is an arithmetic number, because the mean of its divisors is an integer number (2742381030592).

Almost surely, 2^{21253045160233} is an apocalyptic number.

It is an amenable number.

21253045160233 is a deficient number, since it is larger than the sum of its proper divisors (686003084503).

21253045160233 is a wasteful number, since it uses less digits than its factorization.

21253045160233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13155735.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 21253045160233 its reverse (33206154035212), we get a palindrome (54459199195445).

The spelling of 21253045160233 in words is "twenty-one trillion, two hundred fifty-three billion, forty-five million, one hundred sixty thousand, two hundred thirty-three".