1122021202212 has 72 divisors (see below), whose sum is σ = 2873517104640. Its totient is φ = 369093404160.

The previous prime is 1122021202187. The next prime is 1122021202217. The reversal of 1122021202212 is 2122021202211.

It is a happy number.

1122021202212 is a `hidden beast` number, since 11 + 220 + 21 + 202 + 212 = 666.

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 (1122021202217) 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 23 ways as a sum of consecutive naturals, for example, 5823573 + ... + 6013155.

Almost surely, 2^{1122021202212} is an apocalyptic number.

1122021202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122021202212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436758552320).

1122021202212 is an abundant number, since it is smaller than the sum of its proper divisors (1751495902428).

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

1122021202212 is a wasteful number, since it uses less digits than its factorization.

1122021202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191753 (or 191748 counting only the distinct ones).

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

Adding to 1122021202212 its reverse (2122021202211), we get a palindrome (3244042404423).

Subtracting 1122021202212 from its reverse (2122021202211), we obtain a palindrome (999999999999).

The spelling of 1122021202212 in words is "one trillion, one hundred twenty-two billion, twenty-one million, two hundred two thousand, two hundred twelve".