20002201100020 has 24 divisors (see below), whose sum is σ = 42004853452800. Its totient is φ = 8000836412832.

The previous prime is 20002201100009. The next prime is 20002201100027. The reversal of 20002201100020 is 2000110220002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002201100027) 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, 1105561 + ... + 6420799.

It is an arithmetic number, because the mean of its divisors is an integer number (1750202227200).

Almost surely, 2^{20002201100020} is an apocalyptic number.

20002201100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002201100020 is an abundant number, since it is smaller than the sum of its proper divisors (22002652352780).

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

20002201100020 is a wasteful number, since it uses less digits than its factorization.

20002201100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503407 (or 5503405 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20002201100020 its reverse (2000110220002), we get a palindrome (22002311320022).

The spelling of 20002201100020 in words is "twenty trillion, two billion, two hundred one million, one hundred thousand, twenty".