1121022212220 has 36 divisors (see below), whose sum is σ = 3400434044280. Its totient is φ = 298939256544.

The previous prime is 1121022212213. The next prime is 1121022212227. The reversal of 1121022212220 is 222122201211.

It is a happy number.

1121022212220 is a `hidden beast` number, since 1 + 1 + 210 + 22 + 212 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (1121022212213) and next prime (1121022212227).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 1121022212193 and 1121022212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121022212227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3113950410 + ... + 3113950769.

It is an arithmetic number, because the mean of its divisors is an integer number (94456501230).

Almost surely, 2^{1121022212220} is an apocalyptic number.

1121022212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121022212220 is an abundant number, since it is smaller than the sum of its proper divisors (2279411832060).

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

1121022212220 is a wasteful number, since it uses less digits than its factorization.

1121022212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6227901194 (or 6227901189 counting only the distinct ones).

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

Adding to 1121022212220 its reverse (222122201211), we get a palindrome (1343144413431).

The spelling of 1121022212220 in words is "one trillion, one hundred twenty-one billion, twenty-two million, two hundred twelve thousand, two hundred twenty".