20012220202100 has 72 divisors (see below), whose sum is σ = 49836241401408. Its totient is φ = 6832862323200.

The previous prime is 20012220202043. The next prime is 20012220202133. The reversal of 20012220202100 is 120202221002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59144342 + ... + 59481741.

It is an arithmetic number, because the mean of its divisors is an integer number (692170019464).

Almost surely, 2^{20012220202100} is an apocalyptic number.

20012220202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012220202100 is an abundant number, since it is smaller than the sum of its proper divisors (29824021199308).

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

20012220202100 is a wasteful number, since it uses less digits than its factorization.

20012220202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118626345 (or 118626338 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20012220202100 its reverse (120202221002), we get a palindrome (20132422423102).

The spelling of 20012220202100 in words is "twenty trillion, twelve billion, two hundred twenty million, two hundred two thousand, one hundred".