2011100121210 has 128 divisors (see below), whose sum is σ = 5251932794880. Its totient is φ = 490800881664.

The previous prime is 2011100121203. The next prime is 2011100121211. The reversal of 2011100121210 is 121210011102.

It is not an unprimeable number, because it can be changed into a prime (2011100121211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31235431 + ... + 31299749.

It is an arithmetic number, because the mean of its divisors is an integer number (41030724960).

Almost surely, 2^{2011100121210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011100121210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2625966397440).

2011100121210 is an abundant number, since it is smaller than the sum of its proper divisors (3240832673670).

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

2011100121210 is a wasteful number, since it uses less digits than its factorization.

2011100121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66040.

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

Adding to 2011100121210 its reverse (121210011102), we get a palindrome (2132310132312).

The spelling of 2011100121210 in words is "two trillion, eleven billion, one hundred million, one hundred twenty-one thousand, two hundred ten".