21020222120011 has 8 divisors (see below), whose sum is σ = 21146233870944. Its totient is φ = 20894212061760.

The previous prime is 21020222119999. The next prime is 21020222120047. The reversal of 21020222120011 is 11002122202012.

It is a happy number.

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 21020222120011 - 2⁹ = 21020222119499 is a prime.

It is a super-3 number, since 3×21020222120011³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020226120011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31834231 + ... + 32487823.

It is an arithmetic number, because the mean of its divisors is an integer number (2643279233868).

Almost surely, 2^{21020222120011} is an apocalyptic number.

21020222120011 is a deficient number, since it is larger than the sum of its proper divisors (126011750933).

21020222120011 is a wasteful number, since it uses less digits than its factorization.

21020222120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846341.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21020222120011 its reverse (11002122202012), we get a palindrome (32022344322023).

The spelling of 21020222120011 in words is "twenty-one trillion, twenty billion, two hundred twenty-two million, one hundred twenty thousand, eleven".