1013321220231 has 16 divisors (see below), whose sum is σ = 1368380802560. Its totient is φ = 666906851520.

The previous prime is 1013321220221. The next prime is 1013321220299. The reversal of 1013321220231 is 1320221233101.

It is not a de Polignac number, because 1013321220231 - 2⁵ = 1013321220199 is a prime.

It is a super-2 number, since 2×1013321220231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013321220198 and 1013321220207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013321220221) 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, 1509216 + ... + 2074698.

It is an arithmetic number, because the mean of its divisors is an integer number (85523800160).

Almost surely, 2^{1013321220231} is an apocalyptic number.

1013321220231 is a deficient number, since it is larger than the sum of its proper divisors (355059582329).

1013321220231 is an equidigital number, since it uses as much as digits as its factorization.

1013321220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573126.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1013321220231 its reverse (1320221233101), we get a palindrome (2333542453332).

The spelling of 1013321220231 in words is "one trillion, thirteen billion, three hundred twenty-one million, two hundred twenty thousand, two hundred thirty-one".