100222012221220 has 24 divisors (see below), whose sum is σ = 210466573015608. Its totient is φ = 40088738726400.

The previous prime is 100222012221211. The next prime is 100222012221281. The reversal of 100222012221220 is 22122210222001.

It can be written as a sum of positive squares in 4 ways, for example, as 5392900796644 + 94829111424576 = 2322262^2 + 9738024^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9360450 + ... + 16972390.

It is an arithmetic number, because the mean of its divisors is an integer number (8769440542317).

Almost surely, 2^{100222012221220} is an apocalyptic number.

100222012221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100222012221220 is an abundant number, since it is smaller than the sum of its proper divisors (110244560794388).

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

100222012221220 is a wasteful number, since it uses less digits than its factorization.

100222012221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8270271 (or 8270269 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 100222012221220 its reverse (22122210222001), we get a palindrome (122344222443221).

The spelling of 100222012221220 in words is "one hundred trillion, two hundred twenty-two billion, twelve million, two hundred twenty-one thousand, two hundred twenty".