100012121222020 has 48 divisors (see below), whose sum is σ = 240109882604928. Its totient is φ = 34278328465920.

The previous prime is 100012121222017. The next prime is 100012121222071. The reversal of 100012121222020 is 20222121210001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100012121221985 and 100012121222003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119808277 + ... + 120640156.

It is an arithmetic number, because the mean of its divisors is an integer number (5002289220936).

Almost surely, 2^{100012121222020} is an apocalyptic number.

100012121222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100012121222020 is an abundant number, since it is smaller than the sum of its proper divisors (140097761382908).

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

100012121222020 is a wasteful number, since it uses less digits than its factorization.

100012121222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240451420 (or 240451418 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100012121222020 its reverse (20222121210001), we get a palindrome (120234242432021).

The spelling of 100012121222020 in words is "one hundred trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty".