21020022022111 has 8 divisors (see below), whose sum is σ = 24022913836064. Its totient is φ = 18017138089440.

The previous prime is 21020022022099. The next prime is 21020022022121. The reversal of 21020022022111 is 11122022002012.

It is a happy number.

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

It is not a de Polignac number, because 21020022022111 - 2¹⁷ = 21020021891039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020022022121) 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, 5774281 + ... + 8682301.

It is an arithmetic number, because the mean of its divisors is an integer number (3002864229508).

Almost surely, 2^{21020022022111} is an apocalyptic number.

21020022022111 is a deficient number, since it is larger than the sum of its proper divisors (3002891813953).

21020022022111 is a wasteful number, since it uses less digits than its factorization.

21020022022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940641.

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

Adding to 21020022022111 its reverse (11122022002012), we get a palindrome (32142044024123).

The spelling of 21020022022111 in words is "twenty-one trillion, twenty billion, twenty-two million, twenty-two thousand, one hundred eleven".