1220298722500 has 360 divisors, whose sum is σ = 3176663767200. Its totient is φ = 406448640000.

The previous prime is 1220298722483. The next prime is 1220298722581. The reversal of 1220298722500 is 52278920221.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 646001556 + ... + 646003444.

It is an arithmetic number, because the mean of its divisors is an integer number (8824066020).

Almost surely, 2^{1220298722500} is an apocalyptic number.

1220298722500 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 1220298722500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588331883600).

1220298722500 is an abundant number, since it is smaller than the sum of its proper divisors (1956365044700).

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

1220298722500 is a wasteful number, since it uses less digits than its factorization.

1220298722500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089 (or 2059 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 1220298722500 in words is "one trillion, two hundred twenty billion, two hundred ninety-eight million, seven hundred twenty-two thousand, five hundred".