21126651103260 has 96 divisors (see below), whose sum is σ = 65730026880000. Its totient is φ = 5633544951360.

The previous prime is 21126651103211. The next prime is 21126651103343. The reversal of 21126651103260 is 6230115662112.

21126651103260 is a `hidden beast` number, since 2 + 11 + 266 + 51 + 10 + 326 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12735241 + ... + 14298239.

It is an arithmetic number, because the mean of its divisors is an integer number (684687780000).

Almost surely, 2^{21126651103260} is an apocalyptic number.

21126651103260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21126651103260 is an abundant number, since it is smaller than the sum of its proper divisors (44603375776740).

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

21126651103260 is a wasteful number, since it uses less digits than its factorization.

21126651103260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588048 (or 1588040 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 21126651103260 its reverse (6230115662112), we get a palindrome (27356766765372).

The spelling of 21126651103260 in words is "twenty-one trillion, one hundred twenty-six billion, six hundred fifty-one million, one hundred three thousand, two hundred sixty".