21101220023301 has 48 divisors (see below), whose sum is σ = 34153462062720. Its totient is φ = 12441378418560.

The previous prime is 21101220023293. The next prime is 21101220023341. The reversal of 21101220023301 is 10332002210112.

21101220023301 is a `hidden beast` number, since 2 + 110 + 1 + 220 + 0 + 2 + 330 + 1 = 666.

It is not a de Polignac number, because 21101220023301 - 2³ = 21101220023293 is a prime.

It is a super-2 number, since 2×21101220023301² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101220023341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28398760 + ... + 29132318.

It is an arithmetic number, because the mean of its divisors is an integer number (711530459640).

Almost surely, 2^{21101220023301} is an apocalyptic number.

It is an amenable number.

21101220023301 is a deficient number, since it is larger than the sum of its proper divisors (13052242039419).

21101220023301 is a wasteful number, since it uses less digits than its factorization.

21101220023301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741466 (or 741463 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21101220023301 its reverse (10332002210112), we get a palindrome (31433222233413).

The spelling of 21101220023301 in words is "twenty-one trillion, one hundred one billion, two hundred twenty million, twenty-three thousand, three hundred one".