1220303202100 has 72 divisors (see below), whose sum is σ = 2804341635648. Its totient is φ = 459323788800.

The previous prime is 1220303202047. The next prime is 1220303202119. The reversal of 1220303202100 is 12023030221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9597945 + ... + 9724255.

It is an arithmetic number, because the mean of its divisors is an integer number (38949189384).

Almost surely, 2^{1220303202100} is an apocalyptic number.

1220303202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220303202100 is an abundant number, since it is smaller than the sum of its proper divisors (1584038433548).

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

1220303202100 is a wasteful number, since it uses less digits than its factorization.

1220303202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132025 (or 132018 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1220303202100 its reverse (12023030221), we get a palindrome (1232326232321).

The spelling of 1220303202100 in words is "one trillion, two hundred twenty billion, three hundred three million, two hundred two thousand, one hundred".