2311121010 has 128 divisors (see below), whose sum is σ = 6253314048. Its totient is φ = 541728000.

The previous prime is 2311121009. The next prime is 2311121023. The reversal of 2311121010 is 101211132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2331615 + ... + 2332605.

It is an arithmetic number, because the mean of its divisors is an integer number (48854016).

Almost surely, 2^2311121010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311121010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3126657024).

2311121010 is an abundant number, since it is smaller than the sum of its proper divisors (3942193038).

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

2311121010 is a wasteful number, since it uses less digits than its factorization.

2311121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240.

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

The square root of 2311121010 is about 48074.1199607440. The cubic root of 2311121010 is about 1322.1302094193.

Adding to 2311121010 its reverse (101211132), we get a palindrome (2412332142).

It can be divided in two parts, 2311 and 121010, that added together give a palindrome (123321).

The spelling of 2311121010 in words is "two billion, three hundred eleven million, one hundred twenty-one thousand, ten".