1301221032100 has 72 divisors (see below), whose sum is σ = 3080777880096. Its totient is φ = 473104800000.

The previous prime is 1301221032073. The next prime is 1301221032107. The reversal of 1301221032100 is 12301221031.

It is not an unprimeable number, because it can be changed into a prime (1301221032107) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8116720 + ... + 8275480.

It is an arithmetic number, because the mean of its divisors is an integer number (42788581668).

Almost surely, 2^{1301221032100} is an apocalyptic number.

1301221032100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301221032100 is an abundant number, since it is smaller than the sum of its proper divisors (1779556847996).

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

1301221032100 is a wasteful number, since it uses less digits than its factorization.

1301221032100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166237 (or 166230 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1301221032100 its reverse (12301221031), we get a palindrome (1313522253131).

The spelling of 1301221032100 in words is "one trillion, three hundred one billion, two hundred twenty-one million, thirty-two thousand, one hundred".