22271082121 has 8 divisors (see below), whose sum is σ = 23112667080. Its totient is φ = 21434404992.

The previous prime is 22271082037. The next prime is 22271082131. The reversal of 22271082121 is 12128017222.

It can be written as a sum of positive squares in 4 ways, for example, as 1372332025 + 20898750096 = 37045^2 + 144564^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22271082121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22271082121.

It is not an unprimeable number, because it can be changed into a prime (22271082131) 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, 1217710 + ... + 1235863.

It is an arithmetic number, because the mean of its divisors is an integer number (2889083385).

Almost surely, 2^22271082121 is an apocalyptic number.

It is an amenable number.

22271082121 is a deficient number, since it is larger than the sum of its proper divisors (841584959).

22271082121 is a wasteful number, since it uses less digits than its factorization.

22271082121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453915.

The product of its (nonzero) digits is 1792, while the sum is 28.

Adding to 22271082121 its reverse (12128017222), we get a palindrome (34399099343).

The spelling of 22271082121 in words is "twenty-two billion, two hundred seventy-one million, eighty-two thousand, one hundred twenty-one".