11012121232 has 120 divisors (see below), whose sum is σ = 26335933440. Its totient is φ = 4435119360.

The previous prime is 11012121223. The next prime is 11012121271. The reversal of 11012121232 is 23212121011.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1888882 + ... + 1894702.

It is an arithmetic number, because the mean of its divisors is an integer number (219466112).

Almost surely, 2^11012121232 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 11012121232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13167966720).

11012121232 is an abundant number, since it is smaller than the sum of its proper divisors (15323812208).

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

11012121232 is a wasteful number, since it uses less digits than its factorization.

11012121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989 (or 5976 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11012121232 its reverse (23212121011), we get a palindrome (34224242243).

The spelling of 11012121232 in words is "eleven billion, twelve million, one hundred twenty-one thousand, two hundred thirty-two".