21142422434212 has 24 divisors (see below), whose sum is σ = 37829057704704. Its totient is φ = 10334627382912.

The previous prime is 21142422434209. The next prime is 21142422434279. The reversal of 21142422434212 is 21243422424112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63226533 + ... + 63560044.

It is an arithmetic number, because the mean of its divisors is an integer number (1576210737696).

Almost surely, 2^{21142422434212} is an apocalyptic number.

It is an amenable number.

21142422434212 is a deficient number, since it is larger than the sum of its proper divisors (16686635270492).

21142422434212 is a wasteful number, since it uses less digits than its factorization.

21142422434212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126787515 (or 126787513 counting only the distinct ones).

The product of its digits is 49152, while the sum is 34.

Adding to 21142422434212 its reverse (21243422424112), we get a palindrome (42385844858324).

It can be divided in two parts, 2114242 and 2434212, that added together give a palindrome (4548454).

The spelling of 21142422434212 in words is "twenty-one trillion, one hundred forty-two billion, four hundred twenty-two million, four hundred thirty-four thousand, two hundred twelve".