1121021222202 has 256 divisors, whose sum is σ = 3064117248000. Its totient is φ = 296641585152.

The previous prime is 1121021222173. The next prime is 1121021222231. The reversal of 1121021222202 is 2022221201211.

It is a happy number.

1121021222202 is a `hidden beast` number, since 11 + 210 + 21 + 222 + 202 = 666.

It is an interprime number because it is at equal distance from previous prime (1121021222173) and next prime (1121021222231).

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 475612408 + ... + 475614764.

It is an arithmetic number, because the mean of its divisors is an integer number (11969208000).

Almost surely, 2^{1121021222202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121021222202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532058624000).

1121021222202 is an abundant number, since it is smaller than the sum of its proper divisors (1943096025798).

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

1121021222202 is a wasteful number, since it uses less digits than its factorization.

1121021222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850 (or 3844 counting only the distinct ones).

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

Adding to 1121021222202 its reverse (2022221201211), we get a palindrome (3143242423413).

The spelling of 1121021222202 in words is "one trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, two hundred two".