1021013011 has 4 divisors (see below), whose sum is σ = 1022530792. Its totient is φ = 1019495232.

The previous prime is 1021013009. The next prime is 1021013017. The reversal of 1021013011 is 1103101201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1103101201 = 439 ⋅2512759.

It is a cyclic number.

It is not a de Polignac number, because 1021013011 - 2¹ = 1021013009 is a prime.

It is a super-2 number, since 2×1021013011² = 2084935137262572242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021013017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757881 + ... + 759226.

It is an arithmetic number, because the mean of its divisors is an integer number (255632698).

Almost surely, 2^1021013011 is an apocalyptic number.

1021013011 is a deficient number, since it is larger than the sum of its proper divisors (1517781).

1021013011 is an equidigital number, since it uses as much as digits as its factorization.

1021013011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517780.

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

The square root of 1021013011 is about 31953.2942120214. The cubic root of 1021013011 is about 1006.9558410915.

Adding to 1021013011 its reverse (1103101201), we get a palindrome (2124114212).

The spelling of 1021013011 in words is "one billion, twenty-one million, thirteen thousand, eleven".