1331122032400 has 120 divisors (see below), whose sum is σ = 3301882586624. Its totient is φ = 515163801600.

The previous prime is 1331122032349. The next prime is 1331122032419. The reversal of 1331122032400 is 42302211331.

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, 82737157 + ... + 82753243.

Almost surely, 2^{1331122032400} is an apocalyptic number.

1331122032400 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 1331122032400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650941293312).

1331122032400 is an abundant number, since it is smaller than the sum of its proper divisors (1970760554224).

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

1331122032400 is a wasteful number, since it uses less digits than its factorization.

1331122032400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22809 (or 22798 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1331122032400 its reverse (42302211331), we get a palindrome (1373424243731).

The spelling of 1331122032400 in words is "one trillion, three hundred thirty-one billion, one hundred twenty-two million, thirty-two thousand, four hundred".