122221163621 has 8 divisors (see below), whose sum is σ = 129980738880. Its totient is φ = 114524932288.

The previous prime is 122221163573. The next prime is 122221163639. The reversal of 122221163621 is 126361122221.

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-122221163621 is a prime.

It is a super-3 number, since 3×122221163621³ (a number of 34 digits) contains 333 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 (122221163671) 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, 15832001 + ... + 15839718.

It is an arithmetic number, because the mean of its divisors is an integer number (16247592360).

Almost surely, 2^122221163621 is an apocalyptic number.

It is an amenable number.

122221163621 is a deficient number, since it is larger than the sum of its proper divisors (7759575259).

122221163621 is a wasteful number, since it uses less digits than its factorization.

122221163621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31671963.

The product of its digits is 3456, while the sum is 29.

Adding to 122221163621 its reverse (126361122221), we get a palindrome (248582285842).

The spelling of 122221163621 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred sixty-three thousand, six hundred twenty-one".