1121021222200 has 72 divisors (see below), whose sum is σ = 2864857809240. Its totient is φ = 407644072000.

The previous prime is 1121021222173. The next prime is 1121021222231. The reversal of 1121021222200 is 22221201211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23137396 + ... + 23185795.

It is an arithmetic number, because the mean of its divisors is an integer number (39789691795).

Almost surely, 2^{1121021222200} is an apocalyptic number.

1121021222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121021222200 is an abundant number, since it is smaller than the sum of its proper divisors (1743836587040).

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

1121021222200 is a wasteful number, since it uses less digits than its factorization.

1121021222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46323229 (or 46323209 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1121021222200 its reverse (22221201211), we get a palindrome (1143242423411).

The spelling of 1121021222200 in words is "one trillion, one hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, two hundred".