21122102010011 has 4 divisors (see below), whose sum is σ = 21122179834800. Its totient is φ = 21122024185224.

The previous prime is 21122102010007. The next prime is 21122102010029. The reversal of 21122102010011 is 11001020122112.

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 21122102010011 - 2² = 21122102010007 is a prime.

It is a super-2 number, since 2×21122102010011² (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 (21122102010071) 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, 38503856 + ... + 39048573.

It is an arithmetic number, because the mean of its divisors is an integer number (5280544958700).

Almost surely, 2^{21122102010011} is an apocalyptic number.

21122102010011 is a deficient number, since it is larger than the sum of its proper divisors (77824789).

21122102010011 is an equidigital number, since it uses as much as digits as its factorization.

21122102010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77824788.

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

Adding to 21122102010011 its reverse (11001020122112), we get a palindrome (32123122132123).

The spelling of 21122102010011 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred two million, ten thousand, eleven".