22121234200142 has 64 divisors (see below), whose sum is σ = 43548565248000. Its totient is φ = 8164741718880.

The previous prime is 22121234200139. The next prime is 22121234200151. The reversal of 22121234200142 is 24100243212122.

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 31 ways as a sum of consecutive naturals, for example, 86725109 + ... + 86979807.

It is an arithmetic number, because the mean of its divisors is an integer number (680446332000).

Almost surely, 2^{22121234200142} is an apocalyptic number.

22121234200142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121234200142 is a deficient number, since it is larger than the sum of its proper divisors (21427331047858).

22121234200142 is a wasteful number, since it uses less digits than its factorization.

22121234200142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284421.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 22121234200142 its reverse (24100243212122), we get a palindrome (46221477412264).

The spelling of 22121234200142 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred thirty-four million, two hundred thousand, one hundred forty-two".