11523346021 has 8 divisors (see below), whose sum is σ = 12605180544. Its totient is φ = 10447221120.

The previous prime is 11523346007. The next prime is 11523346027. The reversal of 11523346021 is 12064332511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11523346021 - 2⁷ = 11523345893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523346027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423180 + ... + 1431253.

It is an arithmetic number, because the mean of its divisors is an integer number (1575647568).

Almost surely, 2^11523346021 is an apocalyptic number.

11523346021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11523346021 is a deficient number, since it is larger than the sum of its proper divisors (1081834523).

11523346021 is a wasteful number, since it uses less digits than its factorization.

11523346021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854811.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 11523346021 its reverse (12064332511), we get a palindrome (23587678532).

The spelling of 11523346021 in words is "eleven billion, five hundred twenty-three million, three hundred forty-six thousand, twenty-one".