21100122011012 has 24 divisors (see below), whose sum is σ = 41218843001952. Its totient is φ = 9367918862400.

The previous prime is 21100122011011. The next prime is 21100122011027. The reversal of 21100122011012 is 21011022100112.

It is not an unprimeable number, because it can be changed into a prime (21100122011011) 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, 5576140289 + ... + 5576144072.

It is an arithmetic number, because the mean of its divisors is an integer number (1717451791748).

Almost surely, 2^{21100122011012} is an apocalyptic number.

21100122011012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21100122011012 is a deficient number, since it is larger than the sum of its proper divisors (20118720990940).

21100122011012 is a wasteful number, since it uses less digits than its factorization.

21100122011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11152284419 (or 11152284417 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21100122011012 its reverse (21011022100112), we get a palindrome (42111144111124).

The spelling of 21100122011012 in words is "twenty-one trillion, one hundred billion, one hundred twenty-two million, eleven thousand, twelve".