11304545021 has 16 divisors (see below), whose sum is σ = 14157201408. Its totient is φ = 8769222000.

The previous prime is 11304545017. The next prime is 11304545093. The reversal of 11304545021 is 12054540311.

It is not a de Polignac number, because 11304545021 - 2² = 11304545017 is a prime.

It is a super-3 number, since 3×11304545021³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11304545221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312005 + ... + 346346.

It is an arithmetic number, because the mean of its divisors is an integer number (884825088).

Almost surely, 2^11304545021 is an apocalyptic number.

11304545021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11304545021 is a deficient number, since it is larger than the sum of its proper divisors (2852656387).

11304545021 is a wasteful number, since it uses less digits than its factorization.

11304545021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658592.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 11304545021 in words is "eleven billion, three hundred four million, five hundred forty-five thousand, twenty-one".