20101010011020 has 60 divisors (see below), whose sum is σ = 63057612891504. Its totient is φ = 5360269335840.

The previous prime is 20101010011003. The next prime is 20101010011031. The reversal of 20101010011020 is 2011001010102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20101010010993 and 20101010011011.

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 19 ways as a sum of consecutive naturals, for example, 6204013816 + ... + 6204017055.

Almost surely, 2^{20101010011020} is an apocalyptic number.

20101010011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101010011020 is an abundant number, since it is smaller than the sum of its proper divisors (42956602880484).

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

20101010011020 is a wasteful number, since it uses less digits than its factorization.

20101010011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12408030892 (or 12408030881 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20101010011020 its reverse (2011001010102), we get a palindrome (22112011021122).

The spelling of 20101010011020 in words is "twenty trillion, one hundred one billion, ten million, eleven thousand, twenty".