1301222400 has 132 divisors (see below), whose sum is σ = 4300861632. Its totient is φ = 346972160.

The previous prime is 1301222393. The next prime is 1301222411. The reversal of 1301222400 is 42221031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1301222400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68329 + ... + 85271.

Almost surely, 2^1301222400 is an apocalyptic number.

1301222400 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 1301222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2150430816).

1301222400 is an abundant number, since it is smaller than the sum of its proper divisors (2999639232).

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

1301222400 is a wasteful number, since it uses less digits than its factorization.

1301222400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16976 (or 16953 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1301222400 is about 36072.4604095701. The cubic root of 1301222400 is about 1091.7348576042.

Adding to 1301222400 its reverse (42221031), we get a palindrome (1343443431).

The spelling of 1301222400 in words is "one billion, three hundred one million, two hundred twenty-two thousand, four hundred".