1220550445510 has 32 divisors (see below), whose sum is σ = 2537700609312. Its totient is φ = 417728494080.

The previous prime is 1220550445441. The next prime is 1220550445547. The reversal of 1220550445510 is 155440550221.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326348517 + ... + 326352256.

It is an arithmetic number, because the mean of its divisors is an integer number (79303144041).

Almost surely, 2^{1220550445510} is an apocalyptic number.

1220550445510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220550445510 is an abundant number, since it is smaller than the sum of its proper divisors (1317150163802).

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

1220550445510 is a wasteful number, since it uses less digits than its factorization.

1220550445510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652700808.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 1220550445510 its reverse (155440550221), we get a palindrome (1375990995731).

The spelling of 1220550445510 in words is "one trillion, two hundred twenty billion, five hundred fifty million, four hundred forty-five thousand, five hundred ten".