1013333121 has 24 divisors (see below), whose sum is σ = 1486465344. Its totient is φ = 665128800.

The previous prime is 1013333117. The next prime is 1013333143. The reversal of 1013333121 is 1213333101.

It is a happy number.

It is not a de Polignac number, because 1013333121 - 2² = 1013333117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1013333094 and 1013333103.

It is not an unprimeable number, because it can be changed into a prime (1013332121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157671 + ... + 163971.

It is an arithmetic number, because the mean of its divisors is an integer number (61936056).

Almost surely, 2^1013333121 is an apocalyptic number.

It is an amenable number.

1013333121 is a deficient number, since it is larger than the sum of its proper divisors (473132223).

1013333121 is a wasteful number, since it uses less digits than its factorization.

1013333121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581 (or 6578 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1013333121 is about 31832.8936950444. The cubic root of 1013333121 is about 1004.4247662336.

Adding to 1013333121 its reverse (1213333101), we get a palindrome (2226666222).

The spelling of 1013333121 in words is "one billion, thirteen million, three hundred thirty-three thousand, one hundred twenty-one".