2211521532 has 48 divisors (see below), whose sum is σ = 5647418112. Its totient is φ = 668004480.

The previous prime is 2211521491. The next prime is 2211521537. The reversal of 2211521532 is 2351251122.

2211521532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×2211521532⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211521537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14553 + ... + 68079.

It is an arithmetic number, because the mean of its divisors is an integer number (117654544).

Almost surely, 2^2211521532 is an apocalyptic number.

2211521532 is a gapful number since it is divisible by the number (22) 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 2211521532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2823709056).

2211521532 is an abundant number, since it is smaller than the sum of its proper divisors (3435896580).

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

2211521532 is a wasteful number, since it uses less digits than its factorization.

2211521532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53858 (or 53856 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 2211521532 is about 47026.8171578728. The cubic root of 2211521532 is about 1302.8579200395.

Adding to 2211521532 its reverse (2351251122), we get a palindrome (4562772654).

The spelling of 2211521532 in words is "two billion, two hundred eleven million, five hundred twenty-one thousand, five hundred thirty-two".