21220110120011 has 8 divisors (see below), whose sum is σ = 23149251316800. Its totient is φ = 19290975636040.

The previous prime is 21220110119987. The next prime is 21220110120037. The reversal of 21220110120011 is 11002101102212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21220110120011 - 2¹⁸ = 21220109857867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21220110120071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6788780 + ... + 9408918.

It is an arithmetic number, because the mean of its divisors is an integer number (2893656414600).

Almost surely, 2^{21220110120011} is an apocalyptic number.

21220110120011 is a deficient number, since it is larger than the sum of its proper divisors (1929141196789).

21220110120011 is a wasteful number, since it uses less digits than its factorization.

21220110120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356409.

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

Adding to 21220110120011 its reverse (11002101102212), we get a palindrome (32222211222223).

The spelling of 21220110120011 in words is "twenty-one trillion, two hundred twenty billion, one hundred ten million, one hundred twenty thousand, eleven".