122000221221 has 16 divisors (see below), whose sum is σ = 166702609920. Its totient is φ = 79321399920.

The previous prime is 122000221207. The next prime is 122000221223. The reversal of 122000221221 is 122122000221.

It is not a de Polignac number, because 122000221221 - 2⁶ = 122000221157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122000221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122000221223) 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 15 ways as a sum of consecutive naturals, for example, 632545 + ... + 802566.

It is an arithmetic number, because the mean of its divisors is an integer number (10418913120).

Almost surely, 2^122000221221 is an apocalyptic number.

It is an amenable number.

122000221221 is a deficient number, since it is larger than the sum of its proper divisors (44702388699).

122000221221 is a wasteful number, since it uses less digits than its factorization.

122000221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435816.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122000221221 its reverse (122122000221), we get a palindrome (244122221442).

The spelling of 122000221221 in words is "one hundred twenty-two billion, two hundred twenty-one thousand, two hundred twenty-one".