11211244142 has 16 divisors (see below), whose sum is σ = 19303208160. Its totient is φ = 4783835808.

The previous prime is 11211244141. The next prime is 11211244153. The reversal of 11211244142 is 24144211211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211244141) 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, 1745273 + ... + 1751684.

It is an arithmetic number, because the mean of its divisors is an integer number (1206450510).

Almost surely, 2^11211244142 is an apocalyptic number.

11211244142 is a deficient number, since it is larger than the sum of its proper divisors (8091964018).

11211244142 is a wasteful number, since it uses less digits than its factorization.

11211244142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497195.

The product of its digits is 512, while the sum is 23.

Adding to 11211244142 its reverse (24144211211), we get a palindrome (35355455353).

The spelling of 11211244142 in words is "eleven billion, two hundred eleven million, two hundred forty-four thousand, one hundred forty-two".