11120572021 has 4 divisors (see below), whose sum is σ = 11976000652. Its totient is φ = 10265143392.

The previous prime is 11120571941. The next prime is 11120572027. The reversal of 11120572021 is 12027502111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12027502111 = 59753 ⋅201287.

It can be written as a sum of positive squares in 2 ways, for example, as 4639516996 + 6481055025 = 68114^2 + 80505^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120572021 - 2⁹ = 11120571509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11120571983 and 11120572001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120572027) 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, 427714296 + ... + 427714321.

It is an arithmetic number, because the mean of its divisors is an integer number (2994000163).

Almost surely, 2^11120572021 is an apocalyptic number.

It is an amenable number.

11120572021 is a deficient number, since it is larger than the sum of its proper divisors (855428631).

11120572021 is an equidigital number, since it uses as much as digits as its factorization.

11120572021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855428630.

The product of its (nonzero) digits is 280, while the sum is 22.

The spelling of 11120572021 in words is "eleven billion, one hundred twenty million, five hundred seventy-two thousand, twenty-one".