21222021023111 has 8 divisors (see below), whose sum is σ = 21418052697360. Its totient is φ = 21026013607872.

The previous prime is 21222021023101. The next prime is 21222021023117. The reversal of 21222021023111 is 11132012022212.

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 21222021023111 - 2¹⁰ = 21222021022087 is a prime.

It is a super-2 number, since 2×21222021023111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222021023117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4304705 + ... + 7808618.

It is an arithmetic number, because the mean of its divisors is an integer number (2677256587170).

Almost surely, 2^{21222021023111} is an apocalyptic number.

21222021023111 is a deficient number, since it is larger than the sum of its proper divisors (196031674249).

21222021023111 is a wasteful number, since it uses less digits than its factorization.

21222021023111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12129505.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21222021023111 its reverse (11132012022212), we get a palindrome (32354033045323).

The spelling of 21222021023111 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-one million, twenty-three thousand, one hundred eleven".