22742121112 has 8 divisors (see below), whose sum is σ = 42641477100. Its totient is φ = 11371060552.

The previous prime is 22742121067. The next prime is 22742121113. The reversal of 22742121112 is 21112124722.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22742121112² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22742121113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1421382562 + ... + 1421382577.

Almost surely, 2^22742121112 is an apocalyptic number.

It is an amenable number.

22742121112 is a deficient number, since it is larger than the sum of its proper divisors (19899355988).

22742121112 is a wasteful number, since it uses less digits than its factorization.

22742121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842765145 (or 2842765141 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

Adding to 22742121112 its reverse (21112124722), we get a palindrome (43854245834).

The spelling of 22742121112 in words is "twenty-two billion, seven hundred forty-two million, one hundred twenty-one thousand, one hundred twelve".