1301221123100 has 72 divisors (see below), whose sum is σ = 2926136413200. Its totient is φ = 501659827200.

The previous prime is 1301221123099. The next prime is 1301221123133. The reversal of 1301221123100 is 13211221031.

It is a super-2 number, since 2×1301221123100² (a number of 25 digits) contains 22 as substring.

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, 1262996 + ... + 2048804.

Almost surely, 2^{1301221123100} is an apocalyptic number.

1301221123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1301221123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463068206600).

1301221123100 is an abundant number, since it is smaller than the sum of its proper divisors (1624915290100).

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

1301221123100 is a wasteful number, since it uses less digits than its factorization.

1301221123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786423 (or 786416 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1301221123100 its reverse (13211221031), we get a palindrome (1314432344131).

The spelling of 1301221123100 in words is "one trillion, three hundred one billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred".