2221010122212 has 180 divisors, whose sum is σ = 6763429056384. Its totient is φ = 633698160480.

The previous prime is 2221010122207. The next prime is 2221010122241. The reversal of 2221010122212 is 2122210101222.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 11445637 + ... + 11638067.

Almost surely, 2^{2221010122212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221010122212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3381714528192).

2221010122212 is an abundant number, since it is smaller than the sum of its proper divisors (4542418934172).

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

2221010122212 is a wasteful number, since it uses less digits than its factorization.

2221010122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193188 (or 193170 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2221010122212 its reverse (2122210101222), we get a palindrome (4343220223434).

The spelling of 2221010122212 in words is "two trillion, two hundred twenty-one billion, ten million, one hundred twenty-two thousand, two hundred twelve".