22112211021021 has 24 divisors (see below), whose sum is σ = 34844240242656. Its totient is φ = 13401049163040.

The previous prime is 22112211021013. The next prime is 22112211021049. The reversal of 22112211021021 is 12012011221122.

22112211021021 is a `hidden beast` number, since 2 + 211 + 221 + 1 + 0 + 210 + 21 = 666.

It is not a de Polignac number, because 22112211021021 - 2³ = 22112211021013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22112211020985 and 22112211021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112211021521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2205291 + ... + 7006263.

It is an arithmetic number, because the mean of its divisors is an integer number (1451843343444).

Almost surely, 2^{22112211021021} is an apocalyptic number.

It is an amenable number.

22112211021021 is a deficient number, since it is larger than the sum of its proper divisors (12732029221635).

22112211021021 is a wasteful number, since it uses less digits than its factorization.

22112211021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847513 (or 4847510 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22112211021021 its reverse (12012011221122), we get a palindrome (34124222242143).

The spelling of 22112211021021 in words is "twenty-two trillion, one hundred twelve billion, two hundred eleven million, twenty-one thousand, twenty-one".