1220221022000 has 40 divisors (see below), whose sum is σ = 2950494436032. Its totient is φ = 488088408000.

The previous prime is 1220221021991. The next prime is 1220221022011. The reversal of 1220221022000 is 2201220221.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305053256 + ... + 305057255.

Almost surely, 2^{1220221022000} is an apocalyptic number.

1220221022000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220221022000 is an abundant number, since it is smaller than the sum of its proper divisors (1730273414032).

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

1220221022000 is an equidigital number, since it uses as much as digits as its factorization.

1220221022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610110534 (or 610110518 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1220221022000 its reverse (2201220221), we get a palindrome (1222422242221).

The spelling of 1220221022000 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, twenty-two thousand".