21100125670756 has 96 divisors (see below), whose sum is σ = 41026212864000. Its totient is φ = 9415271174400.

The previous prime is 21100125670691. The next prime is 21100125670853. The reversal of 21100125670756 is 65707652100112.

It is a super-2 number, since 2×21100125670756² (a number of 27 digits) contains 22 as substring.

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, 762026160 + ... + 762053848.

It is an arithmetic number, because the mean of its divisors is an integer number (427356384000).

Almost surely, 2^{21100125670756} is an apocalyptic number.

It is an amenable number.

21100125670756 is a deficient number, since it is larger than the sum of its proper divisors (19926087193244).

21100125670756 is a wasteful number, since it uses less digits than its factorization.

21100125670756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29033 (or 29031 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

Adding to 21100125670756 its reverse (65707652100112), we get a palindrome (86807777770868).

The spelling of 21100125670756 in words is "twenty-one trillion, one hundred billion, one hundred twenty-five million, six hundred seventy thousand, seven hundred fifty-six".