1000122220100 has 36 divisors (see below), whose sum is σ = 2240273779968. Its totient is φ = 387144084000.

The previous prime is 1000122220081. The next prime is 1000122220177. The reversal of 1000122220100 is 10222210001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161306936 + ... + 161313135.

Almost surely, 2^{1000122220100} is an apocalyptic number.

1000122220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000122220100 is an abundant number, since it is smaller than the sum of its proper divisors (1240151559868).

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

1000122220100 is a wasteful number, since it uses less digits than its factorization.

1000122220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322620116 (or 322620109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000122220100 its reverse (10222210001), we get a palindrome (1010344430101).

The spelling of 1000122220100 in words is "one trillion, one hundred twenty-two million, two hundred twenty thousand, one hundred".