21103212200011 has 4 divisors (see below), whose sum is σ = 21177781854712. Its totient is φ = 21028642545312.

The previous prime is 21103212199961. The next prime is 21103212200029. The reversal of 21103212200011 is 11000221230112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21103212200011 - 2²⁵ = 21103178645579 is a prime.

It is a super-2 number, since 2×21103212200011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21103212200041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37284826926 + ... + 37284827491.

It is an arithmetic number, because the mean of its divisors is an integer number (5294445463678).

Almost surely, 2^{21103212200011} is an apocalyptic number.

21103212200011 is a deficient number, since it is larger than the sum of its proper divisors (74569654701).

21103212200011 is an equidigital number, since it uses as much as digits as its factorization.

21103212200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74569654700.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21103212200011 its reverse (11000221230112), we get a palindrome (32103433430123).

The spelling of 21103212200011 in words is "twenty-one trillion, one hundred three billion, two hundred twelve million, two hundred thousand, eleven".