11302220021 has 4 divisors (see below), whose sum is σ = 11304180192. Its totient is φ = 11300259852.

The previous prime is 11302220003. The next prime is 11302220077. The reversal of 11302220021 is 12002220311.

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 11302220021 - 2²⁶ = 11235111157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11302219978 and 11302220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11302220081) 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, 971411 + ... + 982976.

It is an arithmetic number, because the mean of its divisors is an integer number (2826045048).

Almost surely, 2^11302220021 is an apocalyptic number.

It is an amenable number.

11302220021 is a deficient number, since it is larger than the sum of its proper divisors (1960171).

11302220021 is an equidigital number, since it uses as much as digits as its factorization.

11302220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960170.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 11302220021 its reverse (12002220311), we get a palindrome (23304440332).

The spelling of 11302220021 in words is "eleven billion, three hundred two million, two hundred twenty thousand, twenty-one".