1102013021 has 4 divisors (see below), whose sum is σ = 1140013500. Its totient is φ = 1064012544.

The previous prime is 1102012997. The next prime is 1102013027. The reversal of 1102013021 is 1203102011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1203102011 = 12611 ⋅95401.

It can be written as a sum of positive squares in 2 ways, for example, as 599760100 + 502252921 = 24490^2 + 22411^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102013021 - 2¹⁸ = 1101750877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1102012993 and 1102013011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102013027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19000196 + ... + 19000253.

It is an arithmetic number, because the mean of its divisors is an integer number (285003375).

Almost surely, 2^1102013021 is an apocalyptic number.

It is an amenable number.

1102013021 is a deficient number, since it is larger than the sum of its proper divisors (38000479).

1102013021 is an equidigital number, since it uses as much as digits as its factorization.

1102013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38000478.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1102013021 is about 33196.5814655666. The cubic root of 1102013021 is about 1032.9094291665.

Adding to 1102013021 its reverse (1203102011), we get a palindrome (2305115032).

The spelling of 1102013021 in words is "one billion, one hundred two million, thirteen thousand, twenty-one".