1321253241400 has 48 divisors (see below), whose sum is σ = 3177841861800. Its totient is φ = 510277111680.

The previous prime is 1321253241391. The next prime is 1321253241409. The reversal of 1321253241400 is 41423521231.

It is an interprime number because it is at equal distance from previous prime (1321253241391) and next prime (1321253241409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321253241409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113895342 + ... + 113906941.

Almost surely, 2^{1321253241400} is an apocalyptic number.

1321253241400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321253241400 is an abundant number, since it is smaller than the sum of its proper divisors (1856588620400).

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

1321253241400 is a wasteful number, since it uses less digits than its factorization.

1321253241400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227802328 (or 227802319 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1321253241400 its reverse (41423521231), we get a palindrome (1362676762631).

The spelling of 1321253241400 in words is "one trillion, three hundred twenty-one billion, two hundred fifty-three million, two hundred forty-one thousand, four hundred".