20001000112220 has 24 divisors (see below), whose sum is σ = 42332825439744. Its totient is φ = 7937404767936.

The previous prime is 20001000112207. The next prime is 20001000112229. The reversal of 20001000112220 is 2221100010002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001000112229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3937202207 + ... + 3937207286.

It is an arithmetic number, because the mean of its divisors is an integer number (1763867726656).

Almost surely, 2^{20001000112220} is an apocalyptic number.

20001000112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001000112220 is an abundant number, since it is smaller than the sum of its proper divisors (22331825327524).

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

20001000112220 is a wasteful number, since it uses less digits than its factorization.

20001000112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7874409629 (or 7874409627 counting only the distinct ones).

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

Adding to 20001000112220 its reverse (2221100010002), we get a palindrome (22222100122222).

The spelling of 20001000112220 in words is "twenty trillion, one billion, one hundred twelve thousand, two hundred twenty".