20111021002200 has 96 divisors (see below), whose sum is σ = 62376860928960. Its totient is φ = 5360126390400.

The previous prime is 20111021002183. The next prime is 20111021002207. The reversal of 20111021002200 is 220012011102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111021002207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7644046 + ... + 9932445.

It is an arithmetic number, because the mean of its divisors is an integer number (649758968010).

Almost surely, 2^{20111021002200} is an apocalyptic number.

20111021002200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111021002200 is an abundant number, since it is smaller than the sum of its proper divisors (42265839926760).

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

20111021002200 is a wasteful number, since it uses less digits than its factorization.

20111021002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17578417 (or 17578408 counting only the distinct ones).

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

Adding to 20111021002200 its reverse (220012011102), we get a palindrome (20331033013302).

The spelling of 20111021002200 in words is "twenty trillion, one hundred eleven billion, twenty-one million, two thousand, two hundred".