11021217142 has 32 divisors (see below), whose sum is σ = 18619953408. Its totient is φ = 4854454176.

The previous prime is 11021217131. The next prime is 11021217161. The reversal of 11021217142 is 24171212011.

It is a happy number.

It is a super-2 number, since 2×11021217142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244113 + ... + 285715.

It is an arithmetic number, because the mean of its divisors is an integer number (581873544).

Almost surely, 2^11021217142 is an apocalyptic number.

11021217142 is a deficient number, since it is larger than the sum of its proper divisors (7598736266).

11021217142 is a wasteful number, since it uses less digits than its factorization.

11021217142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42084.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 11021217142 its reverse (24171212011), we get a palindrome (35192429153).

The spelling of 11021217142 in words is "eleven billion, twenty-one million, two hundred seventeen thousand, one hundred forty-two".