21101130121224 has 32 divisors (see below), whose sum is σ = 53236796184000. Its totient is φ = 6969180589632.

The previous prime is 21101130121213. The next prime is 21101130121229. The reversal of 21101130121224 is 42212103110112.

It is a self number, because there is not a number n which added to its sum of digits gives 21101130121224.

It is not an unprimeable number, because it can be changed into a prime (21101130121229) 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, 4033088004 + ... + 4033093235.

It is an arithmetic number, because the mean of its divisors is an integer number (1663649880750).

Almost surely, 2^{21101130121224} is an apocalyptic number.

21101130121224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21101130121224 is an abundant number, since it is smaller than the sum of its proper divisors (32135666062776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21101130121224 is a wasteful number, since it uses less digits than its factorization.

21101130121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8066181357 (or 8066181353 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 21101130121224 its reverse (42212103110112), we get a palindrome (63313233231336).

The spelling of 21101130121224 in words is "twenty-one trillion, one hundred one billion, one hundred thirty million, one hundred twenty-one thousand, two hundred twenty-four".