20100011220020 has 24 divisors (see below), whose sum is σ = 42210407055264. Its totient is φ = 8039931441696.

The previous prime is 20100011219983. The next prime is 20100011220073. The reversal of 20100011220020 is 2002211000102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20100011219983 and 20100011220010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2281142 + ... + 6738221.

It is an arithmetic number, because the mean of its divisors is an integer number (1758766960636).

Almost surely, 2^{20100011220020} is an apocalyptic number.

20100011220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100011220020 is an abundant number, since it is smaller than the sum of its proper divisors (22110395835244).

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

20100011220020 is a wasteful number, since it uses less digits than its factorization.

20100011220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9130799 (or 9130797 counting only the distinct ones).

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

Adding to 20100011220020 its reverse (2002211000102), we get a palindrome (22102222220122).

The spelling of 20100011220020 in words is "twenty trillion, one hundred billion, eleven million, two hundred twenty thousand, twenty".