2001101320020 has 96 divisors (see below), whose sum is σ = 6277656502656. Its totient is φ = 472004236800.

The previous prime is 2001101320019. The next prime is 2001101320021. The reversal of 2001101320020 is 200231011002.

It is an interprime number because it is at equal distance from previous prime (2001101320019) and next prime (2001101320021).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2001101319978 and 2001101320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001101320021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40948171 + ... + 40997010.

It is an arithmetic number, because the mean of its divisors is an integer number (65392255236).

Almost surely, 2^{2001101320020} is an apocalyptic number.

2001101320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001101320020 is an abundant number, since it is smaller than the sum of its proper divisors (4276555182636).

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

2001101320020 is a wasteful number, since it uses less digits than its factorization.

2001101320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81945241 (or 81945239 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 2001101320020 its reverse (200231011002), we get a palindrome (2201332331022).

The spelling of 2001101320020 in words is "two trillion, one billion, one hundred one million, three hundred twenty thousand, twenty".