20001022201100 has 36 divisors (see below), whose sum is σ = 43402649141208. Its totient is φ = 8000329440000.

The previous prime is 20001022201067. The next prime is 20001022201117. The reversal of 20001022201100 is 110222010002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9701300 + ... + 11580900.

Almost surely, 2^{20001022201100} is an apocalyptic number.

20001022201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001022201100 is an abundant number, since it is smaller than the sum of its proper divisors (23401626940108).

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

20001022201100 is a wasteful number, since it uses less digits than its factorization.

20001022201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986026 (or 1986019 counting only the distinct ones).

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

Adding to 20001022201100 its reverse (110222010002), we get a palindrome (20111244211102).

The spelling of 20001022201100 in words is "twenty trillion, one billion, twenty-two million, two hundred one thousand, one hundred".