100202212121020 has 48 divisors (see below), whose sum is σ = 210711563949600. Its totient is φ = 40026265793280.

The previous prime is 100202212121003. The next prime is 100202212121111. The reversal of 100202212121020 is 20121212202001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100202212120985 and 100202212121003.

It is a congruent number.

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, 49049571 + ... + 51051589.

It is an arithmetic number, because the mean of its divisors is an integer number (4389824248950).

Almost surely, 2^{100202212121020} is an apocalyptic number.

100202212121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100202212121020 is an abundant number, since it is smaller than the sum of its proper divisors (110509351828580).

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

100202212121020 is a wasteful number, since it uses less digits than its factorization.

100202212121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005438 (or 2005436 counting only the distinct ones).

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

Adding to 100202212121020 its reverse (20121212202001), we get a palindrome (120323424323021).

The spelling of 100202212121020 in words is "one hundred trillion, two hundred two billion, two hundred twelve million, one hundred twenty-one thousand, twenty".