2011212544 has 72 divisors (see below), whose sum is σ = 4521000960. Its totient is φ = 884659200.

The previous prime is 2011212503. The next prime is 2011212551. The reversal of 2011212544 is 4452121102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75777 + ... + 98815.

It is an arithmetic number, because the mean of its divisors is an integer number (62791680).

Almost surely, 2^2011212544 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 2011212544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2260500480).

2011212544 is an abundant number, since it is smaller than the sum of its proper divisors (2509788416).

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

2011212544 is a wasteful number, since it uses less digits than its factorization.

2011212544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23097 (or 23083 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2011212544 is about 44846.5443930745. The cubic root of 2011212544 is about 1262.2711502851.

Adding to 2011212544 its reverse (4452121102), we get a palindrome (6463333646).

The spelling of 2011212544 in words is "two billion, eleven million, two hundred twelve thousand, five hundred forty-four".