1013205142221 has 8 divisors (see below), whose sum is σ = 1353523251360. Its totient is φ = 674178563952.

The previous prime is 1013205142219. The next prime is 1013205142241. The reversal of 1013205142221 is 1222415023101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1013205142221 - 2¹ = 1013205142219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1013205142191 and 1013205142200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013205142241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322880886 + ... + 322884023.

It is an arithmetic number, because the mean of its divisors is an integer number (169190406420).

Almost surely, 2^{1013205142221} is an apocalyptic number.

It is an amenable number.

1013205142221 is a deficient number, since it is larger than the sum of its proper divisors (340318109139).

1013205142221 is an equidigital number, since it uses as much as digits as its factorization.

1013205142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645765435.

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 1013205142221 in words is "one trillion, thirteen billion, two hundred five million, one hundred forty-two thousand, two hundred twenty-one".