2101020212100 has 72 divisors (see below), whose sum is σ = 6086303139168. Its totient is φ = 559594515200.

The previous prime is 2101020211967. The next prime is 2101020212111. The reversal of 2101020212100 is 12120201012.

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

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 23 ways as a sum of consecutive naturals, for example, 3986121 + ... + 4482320.

It is an arithmetic number, because the mean of its divisors is an integer number (84531988044).

Almost surely, 2^{2101020212100} is an apocalyptic number.

2101020212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101020212100 is an abundant number, since it is smaller than the sum of its proper divisors (3985282927068).

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

2101020212100 is a wasteful number, since it uses less digits than its factorization.

2101020212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8469285 (or 8469278 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2101020212100 its reverse (12120201012), we get a palindrome (2113140413112).

The spelling of 2101020212100 in words is "two trillion, one hundred one billion, twenty million, two hundred twelve thousand, one hundred".