11012221504 has 56 divisors (see below), whose sum is σ = 22649322240. Its totient is φ = 5306036736.

The previous prime is 11012221501. The next prime is 11012221513. The reversal of 11012221504 is 40512221011.

It is not an unprimeable number, because it can be changed into a prime (11012221501) 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, 1009809 + ... + 1020655.

Almost surely, 2^11012221504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11012221504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11324661120).

11012221504 is an abundant number, since it is smaller than the sum of its proper divisors (11637100736).

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

11012221504 is a wasteful number, since it uses less digits than its factorization.

11012221504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11435 (or 11425 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 11012221504 its reverse (40512221011), we get a palindrome (51524442515).

The spelling of 11012221504 in words is "eleven billion, twelve million, two hundred twenty-one thousand, five hundred four".