122221131221 has 8 divisors (see below), whose sum is σ = 145754392704. Its totient is φ = 100206144720.

The previous prime is 122221131217. The next prime is 122221131239. The reversal of 122221131221 is 122131122221.

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 122221131221 - 2² = 122221131217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221131193 and 122221131202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221131211) 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, 379568570 + ... + 379568891.

It is an arithmetic number, because the mean of its divisors is an integer number (18219299088).

Almost surely, 2^122221131221 is an apocalyptic number.

It is an amenable number.

122221131221 is a deficient number, since it is larger than the sum of its proper divisors (23533261483).

122221131221 is an equidigital number, since it uses as much as digits as its factorization.

122221131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759137491.

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

Adding to 122221131221 its reverse (122131122221), we get a palindrome (244352253442).

The spelling of 122221131221 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred thirty-one thousand, two hundred twenty-one".