11151522021 has 8 divisors (see below), whose sum is σ = 15047837280. Its totient is φ = 7344777392.

The previous prime is 11151522017. The next prime is 11151522023. The reversal of 11151522021 is 12022515111.

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 11151522021 - 2² = 11151522017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11151522023) 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, 22392366 + ... + 22392863.

It is an arithmetic number, because the mean of its divisors is an integer number (1880979660).

Almost surely, 2^11151522021 is an apocalyptic number.

It is an amenable number.

11151522021 is a deficient number, since it is larger than the sum of its proper divisors (3896315259).

11151522021 is an equidigital number, since it uses as much as digits as its factorization.

11151522021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44785315.

The product of its (nonzero) digits is 200, while the sum is 21.

The spelling of 11151522021 in words is "eleven billion, one hundred fifty-one million, five hundred twenty-two thousand, twenty-one".