1021011013 has 16 divisors (see below), whose sum is σ = 1127208960. Its totient is φ = 917090800.

The previous prime is 1021011011. The next prime is 1021011031. The reversal of 1021011013 is 3101101201.

It is a cyclic number.

It is not a de Polignac number, because 1021011013 - 2¹ = 1021011011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021011011) 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, 562878 + ... + 564688.

It is an arithmetic number, because the mean of its divisors is an integer number (70450560).

Almost surely, 2^1021011013 is an apocalyptic number.

It is an amenable number.

1021011013 is a deficient number, since it is larger than the sum of its proper divisors (106197947).

1021011013 is a wasteful number, since it uses less digits than its factorization.

1021011013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1021011013 is about 31953.2629476240. The cubic root of 1021011013 is about 1006.9551842605.

Adding to 1021011013 its reverse (3101101201), we get a palindrome (4122112214).

The spelling of 1021011013 in words is "one billion, twenty-one million, eleven thousand, thirteen".