11020570321 has 4 divisors (see below), whose sum is σ = 11104696944. Its totient is φ = 10936443700.

The previous prime is 11020570283. The next prime is 11020570369. The reversal of 11020570321 is 12307502011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11020570321 - 2²⁷ = 10886352593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020570292 and 11020570301.

It is not an unprimeable number, because it can be changed into a prime (11020570391) 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, 42063115 + ... + 42063376.

It is an arithmetic number, because the mean of its divisors is an integer number (2776174236).

Almost surely, 2^11020570321 is an apocalyptic number.

It is an amenable number.

11020570321 is a deficient number, since it is larger than the sum of its proper divisors (84126623).

11020570321 is an equidigital number, since it uses as much as digits as its factorization.

11020570321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84126622.

The product of its (nonzero) digits is 420, while the sum is 22.

The spelling of 11020570321 in words is "eleven billion, twenty million, five hundred seventy thousand, three hundred twenty-one".