1013013221 has 32 divisors (see below), whose sum is σ = 1220427648. Its totient is φ = 830269440.

The previous prime is 1013013217. The next prime is 1013013229. The reversal of 1013013221 is 1223103101.

It is not a de Polignac number, because 1013013221 - 2² = 1013013217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013013196 and 1013013205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013013229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424985 + ... + 427361.

It is an arithmetic number, because the mean of its divisors is an integer number (38138364).

Almost surely, 2^1013013221 is an apocalyptic number.

1013013221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1013013221 is a deficient number, since it is larger than the sum of its proper divisors (207414427).

1013013221 is a wasteful number, since it uses less digits than its factorization.

1013013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1013013221 is about 31827.8686216969. The cubic root of 1013013221 is about 1004.3190592046.

Adding to 1013013221 its reverse (1223103101), we get a palindrome (2236116322).

The spelling of 1013013221 in words is "one billion, thirteen million, thirteen thousand, two hundred twenty-one".