2101011220100 has 288 divisors, whose sum is σ = 5605853702400. Its totient is φ = 674821324800.

The previous prime is 2101011220051. The next prime is 2101011220103. The reversal of 2101011220100 is 10221101012.

It is not an unprimeable number, because it can be changed into a prime (2101011220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17154881 + ... + 17276919.

It is an arithmetic number, because the mean of its divisors is an integer number (19464769800).

Almost surely, 2^{2101011220100} is an apocalyptic number.

2101011220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101011220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2802926851200).

2101011220100 is an abundant number, since it is smaller than the sum of its proper divisors (3504842482300).

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

2101011220100 is a wasteful number, since it uses less digits than its factorization.

2101011220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122143 (or 122136 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2101011220100 its reverse (10221101012), we get a palindrome (2111232321112).

The spelling of 2101011220100 in words is "two trillion, one hundred one billion, eleven million, two hundred twenty thousand, one hundred".