20001022011100 has 36 divisors (see below), whose sum is σ = 46740849902824. Its totient is φ = 7384992742080.

The previous prime is 20001022011073. The next prime is 20001022011119. The reversal of 20001022011100 is 111022010002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent 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, 7692699474 + ... + 7692702073.

Almost surely, 2^{20001022011100} is an apocalyptic number.

20001022011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001022011100 is an abundant number, since it is smaller than the sum of its proper divisors (26739827891724).

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

20001022011100 is a wasteful number, since it uses less digits than its factorization.

20001022011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15385401574 (or 15385401567 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20001022011100 its reverse (111022010002), we get a palindrome (20112044021102).

The spelling of 20001022011100 in words is "twenty trillion, one billion, twenty-two million, eleven thousand, one hundred".