2211311121210 has 48 divisors (see below), whose sum is σ = 5751287909640. Its totient is φ = 589490248320.

The previous prime is 2211311121199. The next prime is 2211311121233. The reversal of 2211311121210 is 121211131122.

It is a happy number.

2211311121210 is a `hidden beast` number, since 2 + 21 + 1 + 311 + 121 + 210 = 666.

2211311121210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2204538983361 + 6772137849 = 1484769^2 + 82293^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3737925 + ... + 4288904.

Almost surely, 2^{2211311121210} is an apocalyptic number.

2211311121210 is an abundant number, since it is smaller than the sum of its proper divisors (3539976788430).

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

2211311121210 is a wasteful number, since it uses less digits than its factorization.

2211311121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8029903 (or 8029900 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 2211311121210 its reverse (121211131122), we get a palindrome (2332522252332).

It can be divided in two parts, 221131 and 1121210, that added together give a triangular number (1342341 = T₁₆₃₈).

The spelling of 2211311121210 in words is "two trillion, two hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, two hundred ten".