122221290280 has 32 divisors (see below), whose sum is σ = 281705172840. Its totient is φ = 47696112640.

The previous prime is 122221290211. The next prime is 122221290281. The reversal of 122221290280 is 82092122221.

It can be written as a sum of positive squares in 4 ways, for example, as 105182165124 + 17039125156 = 324318^2 + 130534^2 .

It is not an unprimeable number, because it can be changed into a prime (122221290281) 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, 37260949 + ... + 37264228.

Almost surely, 2^122221290280 is an apocalyptic number.

122221290280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122221290280 is an abundant number, since it is smaller than the sum of its proper divisors (159483882560).

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

122221290280 is a wasteful number, since it uses less digits than its factorization.

122221290280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74525229 (or 74525225 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 122221290280 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred ninety thousand, two hundred eighty".