20010020221100 has 144 divisors (see below), whose sum is σ = 53655069355776. Its totient is φ = 6307610400000.

The previous prime is 20010020221097. The next prime is 20010020221151. The reversal of 20010020221100 is 112202001002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2096186 + ... + 6664385.

It is an arithmetic number, because the mean of its divisors is an integer number (372604648304).

Almost surely, 2^{20010020221100} is an apocalyptic number.

20010020221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010020221100 is an abundant number, since it is smaller than the sum of its proper divisors (33645049134676).

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

20010020221100 is a wasteful number, since it uses less digits than its factorization.

20010020221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760856 (or 8760849 counting only the distinct ones).

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

Adding to 20010020221100 its reverse (112202001002), we get a palindrome (20122222222102).

The spelling of 20010020221100 in words is "twenty trillion, ten billion, twenty million, two hundred twenty-one thousand, one hundred".