11012221023 has 4 divisors (see below), whose sum is σ = 14682961368. Its totient is φ = 7341480680.

The previous prime is 11012220959. The next prime is 11012221027. The reversal of 11012221023 is 32012221011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11012221023 - 2⁶ = 11012220959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11012220993 and 11012221011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012221027) 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, 1835370168 + ... + 1835370173.

It is an arithmetic number, because the mean of its divisors is an integer number (3670740342).

Almost surely, 2^11012221023 is an apocalyptic number.

11012221023 is a deficient number, since it is larger than the sum of its proper divisors (3670740345).

11012221023 is an equidigital number, since it uses as much as digits as its factorization.

11012221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670740344.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11012221023 its reverse (32012221011), we get a palindrome (43024442034).

The spelling of 11012221023 in words is "eleven billion, twelve million, two hundred twenty-one thousand, twenty-three".