2011102020020 has 96 divisors (see below), whose sum is σ = 4348620907008. Its totient is φ = 780939574272.

The previous prime is 2011102020019. The next prime is 2011102020043. The reversal of 2011102020020 is 200202011102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2011102019983 and 2011102020010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129799394 + ... + 129814886.

It is an arithmetic number, because the mean of its divisors is an integer number (45298134448).

Almost surely, 2^{2011102020020} is an apocalyptic number.

2011102020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011102020020 is an abundant number, since it is smaller than the sum of its proper divisors (2337518886988).

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

2011102020020 is a wasteful number, since it uses less digits than its factorization.

2011102020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16969 (or 16967 counting only the distinct ones).

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

Adding to 2011102020020 its reverse (200202011102), we get a palindrome (2211304031122).

The spelling of 2011102020020 in words is "two trillion, eleven billion, one hundred two million, twenty thousand, twenty".