2212112121210 has 96 divisors (see below), whose sum is σ = 5888006371728. Its totient is φ = 576055065600.

The previous prime is 2212112121209. The next prime is 2212112121211. The reversal of 2212112121210 is 121212112122.

2212112121210 is a `hidden beast` number, since 221 + 2 + 112 + 121 + 210 = 666.

It is an interprime number because it is at equal distance from previous prime (2212112121209) and next prime (2212112121211).

It can be written as a sum of positive squares in 8 ways, for example, as 1226664787401 + 985447333809 = 1107549^2 + 992697^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2212112121211) 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 47 ways as a sum of consecutive naturals, for example, 1003257 + ... + 2330396.

Almost surely, 2^{2212112121210} is an apocalyptic number.

2212112121210 is an abundant number, since it is smaller than the sum of its proper divisors (3675894250518).

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

2212112121210 is a wasteful number, since it uses less digits than its factorization.

2212112121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333840 (or 3333837 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2212112121210 its reverse (121212112122), we get a palindrome (2333324233332).

The spelling of 2212112121210 in words is "two trillion, two hundred twelve billion, one hundred twelve million, one hundred twenty-one thousand, two hundred ten".