21102200101121 has 4 divisors (see below), whose sum is σ = 21110996352000. Its totient is φ = 21093403850244.

The previous prime is 21102200101069. The next prime is 21102200101133. The reversal of 21102200101121 is 12110100220112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21102200101121 is a prime.

It is a super-2 number, since 2×21102200101121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21102200101096 and 21102200101105.

It is not an unprimeable number, because it can be changed into a prime (21102200101721) 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 3 ways as a sum of consecutive naturals, for example, 4398121841 + ... + 4398126638.

It is an arithmetic number, because the mean of its divisors is an integer number (5277749088000).

Almost surely, 2^{21102200101121} is an apocalyptic number.

It is an amenable number.

21102200101121 is a deficient number, since it is larger than the sum of its proper divisors (8796250879).

21102200101121 is an equidigital number, since it uses as much as digits as its factorization.

21102200101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796250878.

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

Adding to 21102200101121 its reverse (12110100220112), we get a palindrome (33212300321233).

The spelling of 21102200101121 in words is "twenty-one trillion, one hundred two billion, two hundred million, one hundred one thousand, one hundred twenty-one".