11211421744 has 20 divisors (see below), whose sum is σ = 21724044840. Its totient is φ = 5605216640.

The previous prime is 11211421703. The next prime is 11211421747. The reversal of 11211421744 is 44712411211.

It is not an unprimeable number, because it can be changed into a prime (11211421747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216099 + ... + 262909.

It is an arithmetic number, because the mean of its divisors is an integer number (1086202242).

Almost surely, 2^11211421744 is an apocalyptic number.

It is an amenable number.

11211421744 is a deficient number, since it is larger than the sum of its proper divisors (10512623096).

11211421744 is a wasteful number, since it uses less digits than its factorization.

11211421744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61788 (or 61782 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

Adding to 11211421744 its reverse (44712411211), we get a palindrome (55923832955).

The spelling of 11211421744 in words is "eleven billion, two hundred eleven million, four hundred twenty-one thousand, seven hundred forty-four".