11154145021 has 8 divisors (see below), whose sum is σ = 11642912064. Its totient is φ = 10665695040.

The previous prime is 11154145007. The next prime is 11154145027. The reversal of 11154145021 is 12054145111.

It is a happy number.

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 11154145021 - 2⁷ = 11154144893 is a prime.

It is a super-2 number, since 2×11154145021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11154145027) 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, 5911 + ... + 149476.

It is an arithmetic number, because the mean of its divisors is an integer number (1455364008).

Almost surely, 2^11154145021 is an apocalyptic number.

It is an amenable number.

11154145021 is a deficient number, since it is larger than the sum of its proper divisors (488767043).

11154145021 is a wasteful number, since it uses less digits than its factorization.

11154145021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158531.

The product of its (nonzero) digits is 800, while the sum is 25.

The spelling of 11154145021 in words is "eleven billion, one hundred fifty-four million, one hundred forty-five thousand, twenty-one".