11021657000 has 64 divisors (see below), whose sum is σ = 25940163600. Its totient is φ = 4383110400.

The previous prime is 11021656999. The next prime is 11021657057. The reversal of 11021657000 is 75612011.

It can be written as a sum of positive squares in 8 ways, for example, as 338780836 + 10682876164 = 18406^2 + 103358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141146 + ... + 204854.

Almost surely, 2^11021657000 is an apocalyptic number.

11021657000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021657000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12970081800).

11021657000 is an abundant number, since it is smaller than the sum of its proper divisors (14918506600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11021657000 is a wasteful number, since it uses less digits than its factorization.

11021657000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63903 (or 63889 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 23.

The spelling of 11021657000 in words is "eleven billion, twenty-one million, six hundred fifty-seven thousand".