221001301300 has 36 divisors (see below), whose sum is σ = 516463044076. Its totient is φ = 81600480000.

The previous prime is 221001301273. The next prime is 221001301319. The reversal of 221001301300 is 3103100122.

It can be written as a sum of positive squares in 6 ways, for example, as 3496593424 + 217504707876 = 59132^2 + 466374^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84999201 + ... + 85001800.

Almost surely, 2^221001301300 is an apocalyptic number.

221001301300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221001301300 is an abundant number, since it is smaller than the sum of its proper divisors (295461742776).

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

221001301300 is a wasteful number, since it uses less digits than its factorization.

221001301300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170001028 (or 170001021 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 221001301300 its reverse (3103100122), we get a palindrome (224104401422).

The spelling of 221001301300 in words is "two hundred twenty-one billion, one million, three hundred one thousand, three hundred".