2012221121202 has 96 divisors (see below), whose sum is σ = 4648133662848. Its totient is φ = 626933841408.

The previous prime is 2012221121201. The next prime is 2012221121203. The reversal of 2012221121202 is 2021211222102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2012221121201) and next prime (2012221121203).

It is a super-2 number, since 2×2012221121202² (a number of 25 digits) contains 22 as substring.

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 (2012221121201) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 68467803 + ... + 68497185.

It is an arithmetic number, because the mean of its divisors is an integer number (48418058988).

Almost surely, 2^{2012221121202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012221121202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2324066831424).

2012221121202 is an abundant number, since it is smaller than the sum of its proper divisors (2635912541646).

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

2012221121202 is a wasteful number, since it uses less digits than its factorization.

2012221121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30944 (or 30941 counting only the distinct ones).

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

Adding to 2012221121202 its reverse (2021211222102), we get a palindrome (4033432343304).

The spelling of 2012221121202 in words is "two trillion, twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred two".