22111231021 has 8 divisors (see below), whose sum is σ = 24122469600. Its totient is φ = 20100180240.

The previous prime is 22111231003. The next prime is 22111231031. The reversal of 22111231021 is 12013211122.

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 22111231021 - 2⁷ = 22111230893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111230986 and 22111231004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111231031) 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, 332890 + ... + 393748.

It is an arithmetic number, because the mean of its divisors is an integer number (3015308700).

Almost surely, 2^22111231021 is an apocalyptic number.

It is an amenable number.

22111231021 is a deficient number, since it is larger than the sum of its proper divisors (2011238579).

22111231021 is a wasteful number, since it uses less digits than its factorization.

22111231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93899.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22111231021 its reverse (12013211122), we get a palindrome (34124442143).

The spelling of 22111231021 in words is "twenty-two billion, one hundred eleven million, two hundred thirty-one thousand, twenty-one".