11021511345 has 32 divisors (see below), whose sum is σ = 19504192512. Its totient is φ = 5279323392.

The previous prime is 11021511299. The next prime is 11021511367. The reversal of 11021511345 is 54311512011.

It is not a de Polignac number, because 11021511345 - 2⁷ = 11021511217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 756577 + ... + 771006.

It is an arithmetic number, because the mean of its divisors is an integer number (609506016).

Almost surely, 2^11021511345 is an apocalyptic number.

11021511345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11021511345 is a deficient number, since it is larger than the sum of its proper divisors (8482681167).

11021511345 is a wasteful number, since it uses less digits than its factorization.

11021511345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527641.

The product of its (nonzero) digits is 600, while the sum is 24.

The spelling of 11021511345 in words is "eleven billion, twenty-one million, five hundred eleven thousand, three hundred forty-five".