1203221010100 has 36 divisors (see below), whose sum is σ = 2614939795468. Its totient is φ = 480560256000.

The previous prime is 1203221010091. The next prime is 1203221010223. The reversal of 1203221010100 is 10101223021.

It can be written as a sum of positive squares in 6 ways, for example, as 2999971984 + 1200221038116 = 54772^2 + 1095546^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9035421 + ... + 9167620.

Almost surely, 2^{1203221010100} is an apocalyptic number.

1203221010100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203221010100 is an abundant number, since it is smaller than the sum of its proper divisors (1411718785368).

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

1203221010100 is a wasteful number, since it uses less digits than its factorization.

1203221010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18203716 (or 18203709 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1203221010100 its reverse (10101223021), we get a palindrome (1213322233121).

The spelling of 1203221010100 in words is "one trillion, two hundred three billion, two hundred twenty-one million, ten thousand, one hundred".