1122221002000 has 160 divisors (see below), whose sum is σ = 3106211546880. Its totient is φ = 384136934400.

The previous prime is 1122221001943. The next prime is 1122221002013. The reversal of 1122221002000 is 2001222211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8601252 + ... + 8730748.

It is an arithmetic number, because the mean of its divisors is an integer number (19413822168).

Almost surely, 2^{1122221002000} is an apocalyptic number.

1122221002000 is a gapful number since it is divisible by the number (10) 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 1122221002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553105773440).

1122221002000 is an abundant number, since it is smaller than the sum of its proper divisors (1983990544880).

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

1122221002000 is a wasteful number, since it uses less digits than its factorization.

1122221002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130146 (or 130130 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1122221002000 its reverse (2001222211), we get a palindrome (1124222224211).

The spelling of 1122221002000 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, two thousand".