1220200903520 has 48 divisors (see below), whose sum is σ = 2882944875888. Its totient is φ = 488043072000.

The previous prime is 1220200903501. The next prime is 1220200903589. The reversal of 1220200903520 is 253090020221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220200903520.

It is a congruent number.

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, 1858895 + ... + 2428145.

It is an arithmetic number, because the mean of its divisors is an integer number (60061351581).

Almost surely, 2^{1220200903520} is an apocalyptic number.

1220200903520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220200903520 is an abundant number, since it is smaller than the sum of its proper divisors (1662743972368).

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

1220200903520 is a wasteful number, since it uses less digits than its factorization.

1220200903520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582663 (or 582655 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 1220200903520 its reverse (253090020221), we get a palindrome (1473290923741).

The spelling of 1220200903520 in words is "one trillion, two hundred twenty billion, two hundred million, nine hundred three thousand, five hundred twenty".