22122121142 has 32 divisors (see below), whose sum is σ = 38794685184. Its totient is φ = 9358351200.

The previous prime is 22122121129. The next prime is 22122121183. The reversal of 22122121142 is 24112122122.

It is a happy number.

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, 572084 + ... + 609527.

It is an arithmetic number, because the mean of its divisors is an integer number (1212333912).

Almost surely, 2^22122121142 is an apocalyptic number.

22122121142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22122121142 is a deficient number, since it is larger than the sum of its proper divisors (16672564042).

22122121142 is a wasteful number, since it uses less digits than its factorization.

22122121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181684.

The product of its digits is 256, while the sum is 20.

Adding to 22122121142 its reverse (24112122122), we get a palindrome (46234243264).

The spelling of 22122121142 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred forty-two".