1301320311220 has 48 divisors (see below), whose sum is σ = 2827304197200. Its totient is φ = 502525900800.

The previous prime is 1301320311197. The next prime is 1301320311227. The reversal of 1301320311220 is 221130231031.

It can be written as a sum of positive squares in 8 ways, for example, as 23285539216 + 1278034772004 = 152596^2 + 1130502^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301320311227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5629276 + ... + 5855884.

It is an arithmetic number, because the mean of its divisors is an integer number (58902170775).

Almost surely, 2^{1301320311220} is an apocalyptic number.

1301320311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301320311220 is an abundant number, since it is smaller than the sum of its proper divisors (1525983885980).

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

1301320311220 is a wasteful number, since it uses less digits than its factorization.

1301320311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236548 (or 236546 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1301320311220 its reverse (221130231031), we get a palindrome (1522450542251).

The spelling of 1301320311220 in words is "one trillion, three hundred one billion, three hundred twenty million, three hundred eleven thousand, two hundred twenty".