20102101220100 has 36 divisors (see below), whose sum is σ = 58162079531024. Its totient is φ = 5360560325280.

The previous prime is 20102101220083. The next prime is 20102101220153. The reversal of 20102101220100 is 102210120102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33503501734 + ... + 33503502333.

Almost surely, 2^{20102101220100} is an apocalyptic number.

20102101220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102101220100 is an abundant number, since it is smaller than the sum of its proper divisors (38059978310924).

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

20102101220100 is a wasteful number, since it uses less digits than its factorization.

20102101220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67007004084 (or 67007004077 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20102101220100 its reverse (102210120102), we get a palindrome (20204311340202).

The spelling of 20102101220100 in words is "twenty trillion, one hundred two billion, one hundred one million, two hundred twenty thousand, one hundred".