2101101112020 has 48 divisors (see below), whose sum is σ = 6229146829248. Its totient is φ = 527335180800.

The previous prime is 2101101111937. The next prime is 2101101112027. The reversal of 2101101112020 is 202111011012.

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 = 2101101111987 and 2101101112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101101112027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1029950506 + ... + 1029952545.

It is an arithmetic number, because the mean of its divisors is an integer number (129773892276).

Almost surely, 2^{2101101112020} is an apocalyptic number.

2101101112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101101112020 is an abundant number, since it is smaller than the sum of its proper divisors (4128045717228).

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

2101101112020 is a wasteful number, since it uses less digits than its factorization.

2101101112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059903080 (or 2059903078 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2101101112020 its reverse (202111011012), we get a palindrome (2303212123032).

The spelling of 2101101112020 in words is "two trillion, one hundred one billion, one hundred one million, one hundred twelve thousand, twenty".