122221201000 has 32 divisors (see below), whose sum is σ = 285997612680. Its totient is φ = 48888480000.

The previous prime is 122221200979. The next prime is 122221201007. The reversal of 122221201000 is 102122221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67017818884 + 55203382116 = 258878^2 + 234954^2 .

It is not an unprimeable number, because it can be changed into a prime (122221201007) 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, 61109601 + ... + 61111600.

Almost surely, 2^122221201000 is an apocalyptic number.

122221201000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221201000 is an abundant number, since it is smaller than the sum of its proper divisors (163776411680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122221201000 is a wasteful number, since it uses less digits than its factorization.

122221201000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122221222 (or 122221208 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122221201000 its reverse (102122221), we get a palindrome (122323323221).

The spelling of 122221201000 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand".